{"id":3748,"date":"2016-06-06T11:46:23","date_gmt":"2016-06-06T11:46:23","guid":{"rendered":"http:\/\/www.romconvert.ro\/new\/?post_type=portfolio&#038;p=3748"},"modified":"2016-06-13T18:24:32","modified_gmt":"2016-06-13T15:24:32","slug":"studiu-teoretic-si-experimental-asupra-calitatii-procesului-de-pulverizare","status":"publish","type":"portfolio","link":"https:\/\/www.romconvert.ro\/new\/index.php\/portfolio-item\/studiu-teoretic-si-experimental-asupra-calitatii-procesului-de-pulverizare\/","title":{"rendered":"Studiu teoretic \u015fi experimental asupra calit\u0103\u0163ii procesului de pulverizare"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_section-541a21edc89c4228c055bf0ea5d58e9e\">\n.avia-section.av-av_section-541a21edc89c4228c055bf0ea5d58e9e{\nbackground-color:#303030;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_1'  class='avia-section av-av_section-541a21edc89c4228c055bf0ea5d58e9e main_color avia-section-default avia-no-shadow  avia-builder-el-0  el_before_av_section  avia-builder-el-first  avia-bg-style-scroll container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-3748'><div class='entry-content-wrapper clearfix'>\n<section  class='av_textblock_section av-av_textblock-0366cc7376be6c9e82a3e9cc8987b64f '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><h3 style=\"text-align: center;\"><span style=\"color: #ffffff;\">STUDIU TEORETIC \u015eI EXPERIMENTAL ASUPRA CALIT\u0102\u0162II PROCESULUI DE PULVERIZARE<\/span><\/h3>\n<\/div><\/section>\n\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div><div id='av_section_2'  class='avia-section av-av_section-915b33fd1d6006bfc684ade488387eaf main_color avia-section-default avia-no-border-styling  avia-builder-el-2  el_after_av_section  el_before_av_section  avia-bg-style-scroll container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-3748'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-d420064b6edf85cb89c2d76bf16ee91a\">\n#top .av-special-heading.av-av_heading-d420064b6edf85cb89c2d76bf16ee91a{\npadding-bottom:20px;\ncolor:#020202;\n}\nbody .av-special-heading.av-av_heading-d420064b6edf85cb89c2d76bf16ee91a .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-d420064b6edf85cb89c2d76bf16ee91a .special-heading-inner-border{\nborder-color:#020202;\n}\n.av-special-heading.av-av_heading-d420064b6edf85cb89c2d76bf16ee91a .av-subheading{\nfont-size:16px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-d420064b6edf85cb89c2d76bf16ee91a av-special-heading-h2 custom-color-heading blockquote modern-quote modern-centered  avia-builder-el-3  el_before_av_one_fourth  avia-builder-el-first '><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >1. Considera\u0163ii generale<\/h2><div class='av_custom_color av-subheading av-subheading_below'><p>Echipamentul de injec\u0163ie al motoarelor diesel este deosebit de complex, testarea \u015fi reglarea acestuia necesit\u00e2nd utilaje adecvate \u015fi muncitori cu o bun\u0103 calificare. Pentru a m\u0103ri precizia procesului de testare, a \u00eenl\u0103tura subiectivismul lucr\u0103torului \u015fi &#8211; nu \u00een ultimul r\u00e2nd &#8211; a tip\u0103ri un buletin ca rezultat al test\u0103rii, a fost realizat un echipament electronic complex, dotat cu calculator compatibil IBM PC \u015fi cu programele specializate corespunz\u0103toare. Sistemul a fost utilizat pentru echiparea standurilor de centicubat pompe de injec\u0163ie. Echipamentul poate fi folosit at\u00e2t pentru testarea pompelor de injec\u0163ie \u015fi a variatoarelor automate de avans, c\u00e2t \u015fi pentru testarea injectoarelor.<\/p>\n<\/div><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_fourth-9497bbf8bff73ea4c6992cc17fa9ec36\">\n.flex_column.av-av_one_fourth-9497bbf8bff73ea4c6992cc17fa9ec36{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_fourth-9497bbf8bff73ea4c6992cc17fa9ec36 av_one_fourth  avia-builder-el-4  el_after_av_heading  el_before_av_one_half  first flex_column_div av-zero-column-padding  '     ><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_half-9c1d454dc06f7247226bc4e8f931daae\">\n.flex_column.av-av_one_half-9c1d454dc06f7247226bc4e8f931daae{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_half-9c1d454dc06f7247226bc4e8f931daae av_one_half  avia-builder-el-5  el_after_av_one_fourth  el_before_av_one_fourth  flex_column_div av-zero-column-padding  '     ><div  class='avia-button-wrap av-av_button-49f8677f7f0fc0d4fb6a2dbc3a1f0c3e-wrap avia-button-center  avia-builder-el-6  avia-builder-el-no-sibling '>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_button-49f8677f7f0fc0d4fb6a2dbc3a1f0c3e\">\n#top #wrap_all .avia-button.av-av_button-49f8677f7f0fc0d4fb6a2dbc3a1f0c3e{\nbackground-color:#ed3636;\nborder-color:#ed3636;\ncolor:#ffffff;\ntransition:all 0.4s ease-in-out;\n}\n#top #wrap_all .avia-button.av-av_button-49f8677f7f0fc0d4fb6a2dbc3a1f0c3e .avia-svg-icon svg:first-child{\nfill:#ffffff;\nstroke:#ffffff;\n}\n<\/style>\n<a href='http:\/\/www.romconvert.ro\/new\/wp-content\/uploads\/2016\/06\/Studiu-teoretic-\u015fi-experimental-asupra-calit\u0103\u0163ii-procesului-de-pulverizare.pdf'  class='avia-button av-av_button-49f8677f7f0fc0d4fb6a2dbc3a1f0c3e av-link-btn avia-icon_select-yes-left-icon avia-size-large avia-position-center av-icon-on-hover'  target=\"_blank\"  rel=\"noopener noreferrer\"  aria-label=\"DESC\u0102RCARE ARTICOL\"><span class='avia_button_icon avia_button_icon_left avia-iconfont avia-font-entypo-fontello' data-av_icon='\ue812' data-av_iconfont='entypo-fontello' ><\/span><span class='avia_iconbox_title' >DESC\u0102RCARE ARTICOL<\/span><\/a><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_fourth-9c1d454dc06f7247226bc4e8f931daae\">\n.flex_column.av-av_one_fourth-9c1d454dc06f7247226bc4e8f931daae{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_fourth-9c1d454dc06f7247226bc4e8f931daae av_one_fourth  avia-builder-el-7  el_after_av_one_half  avia-builder-el-last  flex_column_div av-zero-column-padding  '     ><\/div><\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_3'  class='avia-section av-av_section-d18d8c2c81d10022ebd21ffa95322c35 main_color avia-section-default avia-no-shadow  avia-builder-el-8  el_after_av_section  el_before_av_one_full  avia-bg-style-scroll container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-3748'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_full-9497bbf8bff73ea4c6992cc17fa9ec36\">\n.flex_column.av-av_one_full-9497bbf8bff73ea4c6992cc17fa9ec36{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_full-9497bbf8bff73ea4c6992cc17fa9ec36 av_one_full  avia-builder-el-9  el_before_av_one_full  avia-builder-el-first  first flex_column_div av-zero-column-padding  '     ><p><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-7a36b97745f4ff15735e0c4a733bdfe0\">\n#top .av-special-heading.av-av_heading-7a36b97745f4ff15735e0c4a733bdfe0{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-av_heading-7a36b97745f4ff15735e0c4a733bdfe0 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-7a36b97745f4ff15735e0c4a733bdfe0 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-7a36b97745f4ff15735e0c4a733bdfe0 av-special-heading-h2 blockquote modern-quote  avia-builder-el-11  el_after_av_heading  avia-builder-el-last '><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >2. Posibilit\u0103\u0163i de testare automat\u0103 a injectoarelor<\/h2><div class='av-subheading av-subheading_below'><p>Metoda de \u00eencercare a injectoarelor utilizat\u0103 pe scar\u0103 larg\u0103 \u00een Rom\u00e2nia este reprezentat\u0103 de un sistem manual \u00een care calitatea procesului de pulverizare este apreciat\u0103 de c\u0103tre un operator uman. Un dezavantaj major al metodei const\u0103 \u00een faptul c\u0103 procesul de verificare are o repetabilitate \u00eendoielnic\u0103 \u015fi aceasta deoarece pomparea se face manual, iar testarea la o frecven\u0163\u0103 mai mare de dou\u0103-trei injec\u0163ii pe secund\u0103 este practic imposibil\u0103. Calitatea aprecierii depinde, \u00een cea mai mare m\u0103sur\u0103, de experien\u0163a operatorului \u015fi de con\u015ftiinciozitatea acestuia pe parcursul verific\u0103rii injectoarelor.<\/p>\n<p>Realizarea unui sistem automat de apreciere a calit\u0103\u0163ii pulveriz\u0103rii are la baz\u0103 observa\u0163ia potrivit c\u0103reia o parte din energia jetului de combustibil produs de injector induce vibra\u0163ii \u00een momentul procesului de injec\u0163ie. Aceste vibra\u0163ii se transmit at\u00e2t mediului \u00een care are loc injec\u0163ia, c\u00e2t \u015fi injectorului \u015fi conductei de \u00eenalt\u0103 presiune (figura 1).<\/p>\n<p>Nota\u0163iile corespunz\u0103toare sunt:<\/p>\n<p>1 &#8211; injector;<br \/>\n2 &#8211; conduct\u0103 de \u00eenalt\u0103 presiune;<br \/>\nEC &#8211; energie cinetic\u0103;<br \/>\nETS &#8211; energie de pulverizare;<br \/>\nEV &#8211; energia vibra\u0163iilor.<\/p>\n<p>\u00cen vederea studierii \u015fi analiz\u0103rii vibra\u0163iilor produse de injector, \u00een cadrul departamentului de cercetare al firmei ROMCONVERT a fost conceput \u015fi realizat un echipament electronic complex care are la baz\u0103 un sistem automat de achizi\u0163ie de date \u00een timp real. Prelucrarea semnalelor provenite de la traductoarele montate pe conductele de \u00eenalt\u0103 presiune, corespunz\u0103toare injectoarelor testate, se realizeaz\u0103 cu ajutorul unui PC, prin intermediul unui program specializat. Cercetarea s-a desf\u0103\u015furat pe dou\u0103 planuri: experimental (\u00een vederea stabilirii traductoarelor adecvate pentru separarea optim\u0103 a semnalului util de zgomotele \u00eenso\u0163itoare) \u015fi numeric (pentru determinarea unor metode c\u00e2t mai relevante de prelucrare a semnalului util).<\/p>\n<p>Problemele cele mai importante care au ap\u0103rut pe parcursul \u00eencerc\u0103rilor au fost dictate de frecven\u0163a mare de e\u015fantionare necesar\u0103 culegerii unui semnal relevant, cerin\u0163a realiz\u0103rii unor filtre \u00een vederea elimin\u0103rii perturba\u0163iilor, necesitatea prelucr\u0103rii \u00eentr-un timp foarte scurt a unui volum mare de date corespunz\u0103toare unei singure injec\u0163ii. Aceste probleme au impus utilizarea unui echipament foarte performant, at\u00e2t \u00een domeniul achizi\u0163iei c\u00e2t \u015fi al prelucr\u0103rii datelor.<\/p>\n<\/div><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_full-9497bbf8bff73ea4c6992cc17fa9ec36\">\n.flex_column.av-av_one_full-9497bbf8bff73ea4c6992cc17fa9ec36{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_full-9497bbf8bff73ea4c6992cc17fa9ec36 av_one_full  avia-builder-el-12  el_after_av_one_full  el_before_av_one_third  first flex_column_div av-zero-column-padding  column-top-margin'     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-077699ee75044f4cf7865fc802d9ff8e\">\n#top .av-special-heading.av-av_heading-077699ee75044f4cf7865fc802d9ff8e{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-av_heading-077699ee75044f4cf7865fc802d9ff8e .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-077699ee75044f4cf7865fc802d9ff8e .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-077699ee75044f4cf7865fc802d9ff8e av-special-heading-h2 blockquote modern-quote  avia-builder-el-13  avia-builder-el-no-sibling '><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >3. Prezentarea rezultatelor<\/h2><div class='av-subheading av-subheading_below'><p>Utilizarea echipamentului prezentat mai sus a condus la ob\u0163inerea unor rezultate relevante privind capacitatea de testare electronic\u0103 a injectoarelor. Pentru analiza numeric\u0103 a semnalului captat de la injector au fost utilizate mai multe criterii, dintre care au ap\u0103rut &#8211; ca fiind mai relevante &#8211; anvelopa semnalului \u015fi transformata Fourier rapid\u0103 (FFT).<\/p>\n<p>O problem\u0103 important\u0103 a constituit-o g\u0103sirea unor criterii obiective de apreciare a calit\u0103\u0163ii func\u0163ion\u0103rii injectorului. \u0162in\u00e2nd cont \u015fi de modul \u00een care se lucreaz\u0103 \u00een domeniul produc\u0163iei \u015fi test\u0103rii, la fabricant, a echipamentelor de injec\u0163ie, \u00een final s-a optat pentru realizarea compara\u0163iei cu o prob\u0103 etalon pentru a se decide asupra bunei func\u0163ion\u0103ri a injectorului. Aceast\u0103 solu\u0163ie implic\u0103 realizarea unei baze de date care s\u0103 includ\u0103 caracteristicile corespunz\u0103toare fiec\u0103rui tip de injector \u00een parte.<\/p>\n<p>\u00cen figurile 2, 3 \u015fi 4 este prezentat grafic semnalul provenit de la un injector folosit drept prob\u0103 etalon.<\/p>\n<\/div><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_third-9497bbf8bff73ea4c6992cc17fa9ec36\">\n.flex_column.av-av_one_third-9497bbf8bff73ea4c6992cc17fa9ec36{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_third-9497bbf8bff73ea4c6992cc17fa9ec36 av_one_third  avia-builder-el-14  el_after_av_one_full  el_before_av_one_third  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_image-3192cf0f6837623302e5395b44efde2b\">\n.avia-image-container.av-av_image-3192cf0f6837623302e5395b44efde2b img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-av_image-3192cf0f6837623302e5395b44efde2b .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-av_image-3192cf0f6837623302e5395b44efde2b av-styling- avia-align-center  avia-builder-el-15  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-3749 avia-img-lazy-loading-not-3749 avia_image ' src=\"https:\/\/www.romconvert.ro\/new\/wp-content\/uploads\/2016\/06\/10-2.gif\" alt='' title='10-2'  height=\"250\" width=\"301\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-av_textblock-0366cc7376be6c9e82a3e9cc8987b64f '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\">Figura 2 prezint\u0103 semnalul brut achizi\u0163ionat.<\/p>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_third-9c1d454dc06f7247226bc4e8f931daae\">\n.flex_column.av-av_one_third-9c1d454dc06f7247226bc4e8f931daae{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_third-9c1d454dc06f7247226bc4e8f931daae av_one_third  avia-builder-el-17  el_after_av_one_third  el_before_av_one_third  flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_image-d01875a37a8d4d4c3a7ddadbb74bd981\">\n.avia-image-container.av-av_image-d01875a37a8d4d4c3a7ddadbb74bd981 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-av_image-d01875a37a8d4d4c3a7ddadbb74bd981 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-av_image-d01875a37a8d4d4c3a7ddadbb74bd981 av-styling- avia-align-center  avia-builder-el-18  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-3750 avia-img-lazy-loading-not-3750 avia_image ' src=\"https:\/\/www.romconvert.ro\/new\/wp-content\/uploads\/2016\/06\/10-3.gif\" alt='' title='10-3'  height=\"251\" width=\"301\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-av_textblock-0366cc7376be6c9e82a3e9cc8987b64f '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\">\u00cen figura 3 este reprezentat\u0103 anvelopa corespunz\u0103toare a semnalului recep\u0163ionat.<\/p>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_third-9497bbf8bff73ea4c6992cc17fa9ec36\">\n.flex_column.av-av_one_third-9497bbf8bff73ea4c6992cc17fa9ec36{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_third-9497bbf8bff73ea4c6992cc17fa9ec36 av_one_third  avia-builder-el-20  el_after_av_one_third  avia-builder-el-last  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_image-1b1c6b51ad8bd805eef727e6e1f56c40\">\n.avia-image-container.av-av_image-1b1c6b51ad8bd805eef727e6e1f56c40 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-av_image-1b1c6b51ad8bd805eef727e6e1f56c40 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-av_image-1b1c6b51ad8bd805eef727e6e1f56c40 av-styling- avia-align-center  avia-builder-el-21  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-3751 avia-img-lazy-loading-not-3751 avia_image ' src=\"https:\/\/www.romconvert.ro\/new\/wp-content\/uploads\/2016\/06\/10-4.gif\" alt='' title='10-4'  height=\"251\" width=\"301\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-av_textblock-0366cc7376be6c9e82a3e9cc8987b64f '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\">Figura 4 indic\u0103 transformata Fourier rapid\u0103.<\/p>\n<\/div><\/section><\/p><\/div>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='after_section_3'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-3748'><div class='entry-content-wrapper clearfix'><\/p>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_full-9497bbf8bff73ea4c6992cc17fa9ec36\">\n.flex_column.av-av_one_full-9497bbf8bff73ea4c6992cc17fa9ec36{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_full-9497bbf8bff73ea4c6992cc17fa9ec36 av_one_full  avia-builder-el-23  el_after_av_section  el_before_av_one_third  avia-builder-el-first  first flex_column_div av-zero-column-padding  '     ><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_third-9497bbf8bff73ea4c6992cc17fa9ec36\">\n.flex_column.av-av_one_third-9497bbf8bff73ea4c6992cc17fa9ec36{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_third-9497bbf8bff73ea4c6992cc17fa9ec36 av_one_third  avia-builder-el-25  el_after_av_one_full  el_before_av_one_third  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_image-da78150620f0d0d8f26b9932dde2110b\">\n.avia-image-container.av-av_image-da78150620f0d0d8f26b9932dde2110b img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-av_image-da78150620f0d0d8f26b9932dde2110b .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-av_image-da78150620f0d0d8f26b9932dde2110b av-styling- avia-align-center  avia-builder-el-26  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-3752 avia-img-lazy-loading-not-3752 avia_image ' src=\"https:\/\/www.romconvert.ro\/new\/wp-content\/uploads\/2016\/06\/10-5.gif\" alt='' title='10-5'  height=\"251\" width=\"302\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-av_textblock-0366cc7376be6c9e82a3e9cc8987b64f '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\">\u00cen diagrama din figura 5 este prezentat\u0103 anvelopa corespunz\u0103toare semnalului recep\u0163ionat de la injectorul testat.<\/p>\n<\/div><\/section><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_third-9c1d454dc06f7247226bc4e8f931daae\">\n.flex_column.av-av_one_third-9c1d454dc06f7247226bc4e8f931daae{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_third-9c1d454dc06f7247226bc4e8f931daae av_one_third  avia-builder-el-28  el_after_av_one_third  el_before_av_one_third  flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_image-3f158cae3124e25eb58dd041b557abd4\">\n.avia-image-container.av-av_image-3f158cae3124e25eb58dd041b557abd4 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-av_image-3f158cae3124e25eb58dd041b557abd4 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-av_image-3f158cae3124e25eb58dd041b557abd4 av-styling- avia-align-center  avia-builder-el-29  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-3753 avia-img-lazy-loading-not-3753 avia_image ' src=\"https:\/\/www.romconvert.ro\/new\/wp-content\/uploads\/2016\/06\/10-6.gif\" alt='' title='10-6'  height=\"251\" width=\"302\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-av_textblock-0366cc7376be6c9e82a3e9cc8987b64f '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><div class=\"as-images row\">\n<div class=\"as-box col-lg-4 col-md-4 col-sm-4 col-xs-12\">\n<p style=\"text-align: center;\">\u00cen reprezentarea din figura 6 se observ\u0103 clar diferen\u0163a existent\u0103 \u00eentre transformatele Fourier ale celor dou\u0103 semnale, analiza comparativ\u0103 fiind f\u0103cut\u0103 numeric. Decizia este luat\u0103 de PC, ceea ce conduce la departajarea foarte fin\u0103 a injectoarelor.<\/p>\n<p style=\"text-align: center;\">Acest tip de defect poate fi \u00eent\u00e2lnit la injectorele la care orificiile de pulverizare sunt decalibrate \u00een urma func\u0163ion\u0103rii, sau la injectoarele noi care au abateri la execu\u0163ia g\u0103urilor de pulverizare.<\/p>\n<\/div>\n<\/div>\n<\/div><\/section><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_third-9c1d454dc06f7247226bc4e8f931daae\">\n.flex_column.av-av_one_third-9c1d454dc06f7247226bc4e8f931daae{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_third-9c1d454dc06f7247226bc4e8f931daae av_one_third  avia-builder-el-31  el_after_av_one_third  el_before_av_one_third  flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_image-7395e335229b02c64bdd77805f86e40d\">\n.avia-image-container.av-av_image-7395e335229b02c64bdd77805f86e40d img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-av_image-7395e335229b02c64bdd77805f86e40d .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-av_image-7395e335229b02c64bdd77805f86e40d av-styling- avia-align-center  avia-builder-el-32  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-3754 avia-img-lazy-loading-not-3754 avia_image ' src=\"https:\/\/www.romconvert.ro\/new\/wp-content\/uploads\/2016\/06\/10-7.gif\" alt='' title='10-7'  height=\"251\" width=\"302\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-av_textblock-0366cc7376be6c9e82a3e9cc8987b64f '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\">Din diagrama prezentat\u0103 \u00een figura 7 se poate observa u\u015for c\u0103 diferen\u0163a \u00eentre anvelopele semnalelor etalon \u015fi test este mare.<\/p>\n<\/div><\/section><\/p><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_third-9497bbf8bff73ea4c6992cc17fa9ec36\">\n.flex_column.av-av_one_third-9497bbf8bff73ea4c6992cc17fa9ec36{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_third-9497bbf8bff73ea4c6992cc17fa9ec36 av_one_third  avia-builder-el-34  el_after_av_one_third  el_before_av_heading  first flex_column_div av-zero-column-padding  column-top-margin'     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_image-c4b22ce1d73074ebb41b679b01564feb\">\n.avia-image-container.av-av_image-c4b22ce1d73074ebb41b679b01564feb img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-av_image-c4b22ce1d73074ebb41b679b01564feb .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-av_image-c4b22ce1d73074ebb41b679b01564feb av-styling- avia-align-center  avia-builder-el-35  el_before_av_textblock  avia-builder-el-first '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-3755 avia-img-lazy-loading-not-3755 avia_image ' src=\"https:\/\/www.romconvert.ro\/new\/wp-content\/uploads\/2016\/06\/10-8.gif\" alt='' title='10-8'  height=\"251\" width=\"302\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-av_textblock-0366cc7376be6c9e82a3e9cc8987b64f '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p style=\"text-align: center;\">La o prim\u0103 vedere s-ar p\u0103rea c\u0103 transformatele Fourier ale celor dou\u0103 semnale aproape coincid (figura 8), decizia \u00een acest caz fiind luat\u0103 de PC.<\/p>\n<\/div><\/section><\/p><\/div>\n\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_heading-5e278f727fc8f6bac0966233c6056d92\">\n#top .av-special-heading.av-av_heading-5e278f727fc8f6bac0966233c6056d92{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-av_heading-5e278f727fc8f6bac0966233c6056d92 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-av_heading-5e278f727fc8f6bac0966233c6056d92 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-av_heading-5e278f727fc8f6bac0966233c6056d92 av-special-heading-h2 blockquote modern-quote  avia-builder-el-38  el_after_av_heading  avia-builder-el-last '><h2 class='av-special-heading-tag '  itemprop=\"headline\"  > 4. Concluzii<\/h2><div class='av-subheading av-subheading_below'><p>Analiza c\u00e2torva sute de injectoare de diferite tipuri a demonstrat c\u0103 metoda permite selectarea injectoarelor prin compara\u0163ie cu un etalon al clasei respective. Cu c\u00e2t valorile numerice ale criteriilor folosite sunt mai apropiate de valorile etalonului, cu at\u00e2t mai mult injectorul se comport\u0103 ca \u015fi etalonul. Rezultatele ob\u0163inute au ar\u0103tat c\u0103 exist\u0103 &#8211; pentru fiecare tip de injector &#8211; un prag al valorilor numerice care caracterizeaz\u0103 o func\u0163ionare defectuoas\u0103.<\/p>\n<p>Echipamentul tehnic folosit pentru testarea injectoarelor elimin\u0103 subiectivismul operatorului \u00een procesul de verificare. Testarea se desf\u0103\u015foar\u0103 dinamic, la diferite tura\u0163ii, astfel c\u0103 este posibil\u0103 punerea \u00een eviden\u0163\u0103 a mult mai multor defecte dec\u00e2t prin intermediul metodei clasice.<\/p>\n<p>Procesul de testare se eviden\u0163iaz\u0103 prin parametri bine defini\u0163i: debitul \u015fi tura\u0163iile corespunz\u0103toare de \u00eencercare.<\/p>\n<p>Sensibilitatea metodei este foarte ridicat\u0103, fiind posibil\u0103 \u015fi testarea injectoarelor cu camer\u0103 redus\u0103 de acumulare (care prin metoda clasic\u0103 de verificare nu permit audierea zgomotului specific de &#8222;rupere&#8221;).<\/p>\n<p>Metoda a fost prezentat\u0103 \u015fi principalului produc\u0103tor rom\u00e2n de injectoare, HIDROJET Breaza. Cu ajutorul ei au fost testate, gratuit, dou\u0103 loturi de injectoare din produc\u0163ia pentru export. De\u015fi rezultatele ob\u0163inute au fost spectaculoase, colaborarea nu a mai continuat din ra\u0163iuni financiare.<\/p>\n<p>Bibliografie:<br \/>\nBoncoi, J.; Turcoiu, T.: Cercet\u0103ri experimentale privind influen\u0163a toleran\u0163elor de fabrica\u0163ie \u015fi a geometriei elementului de refulare asupra neuniformit\u0103\u0163ii debitului la pompele de injec\u0163ie de m\u0103rime A, Construc\u0163ia de Ma\u015fini, 12, 1980.<br \/>\nStockner, A. R.; Flinn, M. A.; Camplin, F. A. (Caterpillar Inc.): Development of the HEUI Fuel System-Integration of Design, Simulation, Test and Manufacturing, SAE Paper No. 930271, 1993.<br \/>\nStockner, A. R.; Flinn, M. A.; Camplin, F. A. (Caterpillar Inc.): A New Direction for Diesel Engine Fuel System, SAE Paper No. 930270, 1993.<br \/>\nChen, C.; Veshagh, A.: A Simple Unified Fuel Spray Model, SAE Paper No. 930923, 1993.<br \/>\nRussell, M. F.; Young, C. D.; Nicol, S. W.: Modulation of Injection Rate to Improve Direct Injection Diesel Engine Noise, SAE Paper No. 900349, 1992.<br \/>\nNeac\u015fu, S.: Studiul fenomenelor tranzitorii din circuitul de \u00eenalt\u0103 presiune al echipamentului de injec\u0163ie, Tez\u0103 de doctorat, Universitatea Petrol-Gaze, Ploie\u015fti, 1997.<br \/>\nNeac\u015fu, S.; Chiper, L.; Florea, T.: Cercet\u0103ri experimentale privind posibilitatea test\u0103rii electronice a calit\u0103\u0163ii procesului de pulverizare, Conferin\u0163a Na\u0163ional\u0103 de Termotehnic\u0103 Pite\u015fti, vol. I, pag. 263-269, Editura Universit\u0103\u0163ii Pite\u015fti, mai 1998.<\/p>\n<\/div><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":3749,"comment_status":"open","ping_status":"closed","template":"","meta":{"footnotes":""},"tags":[],"portfolio_entries":[54],"class_list":["post-3748","portfolio","type-portfolio","status-publish","has-post-thumbnail","hentry","portfolio_entries-studiu-teoretic-si-experimental-asupra-calitatii-procesului-de-pulverizare"],"_links":{"self":[{"href":"https:\/\/www.romconvert.ro\/new\/index.php\/wp-json\/wp\/v2\/portfolio\/3748","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.romconvert.ro\/new\/index.php\/wp-json\/wp\/v2\/portfolio"}],"about":[{"href":"https:\/\/www.romconvert.ro\/new\/index.php\/wp-json\/wp\/v2\/types\/portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/www.romconvert.ro\/new\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.romconvert.ro\/new\/index.php\/wp-json\/wp\/v2\/comments?post=3748"}],"version-history":[{"count":1,"href":"https:\/\/www.romconvert.ro\/new\/index.php\/wp-json\/wp\/v2\/portfolio\/3748\/revisions"}],"predecessor-version":[{"id":3874,"href":"https:\/\/www.romconvert.ro\/new\/index.php\/wp-json\/wp\/v2\/portfolio\/3748\/revisions\/3874"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.romconvert.ro\/new\/index.php\/wp-json\/wp\/v2\/media\/3749"}],"wp:attachment":[{"href":"https:\/\/www.romconvert.ro\/new\/index.php\/wp-json\/wp\/v2\/media?parent=3748"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.romconvert.ro\/new\/index.php\/wp-json\/wp\/v2\/tags?post=3748"},{"taxonomy":"portfolio_entries","embeddable":true,"href":"https:\/\/www.romconvert.ro\/new\/index.php\/wp-json\/wp\/v2\/portfolio_entries?post=3748"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}