Which type of injector nozzle would be used in most diesel engine fuel systems built after 2007? A. Pintle valve C. Multiple-orifice B. Hard opening value D. Electrohydraulic | Numerade (2024)

`); let searchUrl = `/search/`; history.forEach((elem) => { prevsearch.find('#prevsearch-options').append(`

${elem}

`); }); } $('#search-pretype-options').empty(); $('#search-pretype-options').append(prevsearch); let prevbooks = $(false); [ {title:"Recently Opened Textbooks", books:previous_books}, {title:"Recommended Textbooks", books:recommended_books} ].forEach((book_segment) => { if (Array.isArray(book_segment.books) && book_segment.books.length>0 && nsegments<2) { nsegments+=1; prevbooks = $(`

  • ${book_segment.title}
  • `); let searchUrl = "/books/xxx/"; book_segment.books.forEach((elem) => { prevbooks.find('#prevbooks-options'+nsegments.toString()).append(`

    ${elem.title} ${ordinal(elem.edition)} ${elem.author}

    `); }); } $('#search-pretype-options').append(prevbooks); }); } function anon_pretype() { let prebooks = null; try { prebooks = JSON.parse(localStorage.getItem('PRETYPE_BOOKS_ANON')); }catch(e) {} if ('previous_books' in prebooks && 'recommended_books' in prebooks) { previous_books = prebooks.previous_books; recommended_books = prebooks.recommended_books; if (typeof PREVBOOKS !== 'undefined' && Array.isArray(PREVBOOKS)) { new_prevbooks = PREVBOOKS; previous_books.forEach(elem => { for (let i = 0; i < new_prevbooks.length; i++) { if (elem.id == new_prevbooks[i].id) { return; } } new_prevbooks.push(elem); }); new_prevbooks = new_prevbooks.slice(0,3); previous_books = new_prevbooks; } if (typeof RECBOOKS !== 'undefined' && Array.isArray(RECBOOKS)) { new_recbooks = RECBOOKS; for (let j = 0; j < new_recbooks.length; j++) { new_recbooks[j].viewed_at = new Date(); } let insert = true; for (let i=0; i < recommended_books.length; i++){ for (let j = 0; j < new_recbooks.length; j++) { if (recommended_books[i].id == new_recbooks[j].id) { insert = false; } } if (insert){ new_recbooks.push(recommended_books[i]); } } new_recbooks.sort((a,b)=>{ adate = new Date(2000, 0, 1); bdate = new Date(2000, 0, 1); if ('viewed_at' in a) {adate = new Date(a.viewed_at);} if ('viewed_at' in b) {bdate = new Date(b.viewed_at);} // 100000000: instead of just erasing the suggestions from previous week, // we just move them to the back of the queue acurweek = ((new Date()).getDate()-adate.getDate()>7)?0:100000000; bcurweek = ((new Date()).getDate()-bdate.getDate()>7)?0:100000000; aviews = 0; bviews = 0; if ('views' in a) {aviews = acurweek+a.views;} if ('views' in b) {bviews = bcurweek+b.views;} return bviews - aviews; }); new_recbooks = new_recbooks.slice(0,3); recommended_books = new_recbooks; } localStorage.setItem('PRETYPE_BOOKS_ANON', JSON.stringify({ previous_books: previous_books, recommended_books: recommended_books })); build_popup(); } } var whiletyping_search_object = null; var whiletyping_search = { books: [], curriculum: [], topics: [] } var single_whiletyping_ajax_promise = null; var whiletyping_database_initial_burst = 0; //number of consecutive calls, after 3 we start the 1 per 5 min calls function get_whiletyping_database() { //gets the database from the server. // 1. by validating against a local database value we confirm that the framework is working and // reduce the ammount of continuous calls produced by errors to 1 per 5 minutes. return localforage.getItem('whiletyping_last_attempt').then(function(value) { if ( value==null || (new Date()) - (new Date(value)) > 1000*60*5 || (whiletyping_database_initial_burst < 3) ) { localforage.setItem('whiletyping_last_attempt', (new Date()).getTime()); // 2. Make an ajax call to the server and get the search database. let databaseUrl = `/search/whiletype_database/`; let resp = single_whiletyping_ajax_promise; if (resp === null) { whiletyping_database_initial_burst = whiletyping_database_initial_burst + 1; single_whiletyping_ajax_promise = resp = new Promise((resolve, reject) => { $.ajax({ url: databaseUrl, type: 'POST', data:{csrfmiddlewaretoken: "jVPhw94KmAchDyFPWNASOHggugkAFTVQcVvPSKoV5XRLDmW0HiZqsWrUrVXbfeD6"}, success: function (data) { // 3. verify that the elements of the database exist and are arrays if ( ('books' in data) && ('curriculum' in data) && ('topics' in data) && Array.isArray(data.books) && Array.isArray(data.curriculum) && Array.isArray(data.topics)) { localforage.setItem('whiletyping_last_success', (new Date()).getTime()); localforage.setItem('whiletyping_database', data); resolve(data); } }, error: function (error) { console.log(error); resolve(null); }, complete: function (data) { single_whiletyping_ajax_promise = null; } }) }); } return resp; } return Promise.resolve(null); }).catch(function(err) { console.log(err); return Promise.resolve(null); }); } function get_whiletyping_search_object() { // gets the fuse objects that will be in charge of the search if (whiletyping_search_object){ return Promise.resolve(whiletyping_search_object); } database_promise = localforage.getItem('whiletyping_database').then(function(database) { return localforage.getItem('whiletyping_last_success').then(function(last_success) { if (database==null || (new Date()) - (new Date(last_success)) > 1000*60*60*24*30 || (new Date('2023-04-25T00:00:00')) - (new Date(last_success)) > 0) { // New database update return get_whiletyping_database().then(function(new_database) { if (new_database) { database = new_database; } return database; }); } else { return Promise.resolve(database); } }); }); return database_promise.then(function(database) { if (database) { const options = { isCaseSensitive: false, includeScore: true, shouldSort: true, // includeMatches: false, // findAllMatches: false, // minMatchCharLength: 1, // location: 0, threshold: 0.2, // distance: 100, // useExtendedSearch: false, ignoreLocation: true, // ignoreFieldNorm: false, // fieldNormWeight: 1, keys: [ "title" ] }; let curriculum_index={}; let topics_index={}; database.curriculum.forEach(c => curriculum_index[c.id]=c); database.topics.forEach(t => topics_index[t.id]=t); for (j=0; j

    Solutions
  • Textbooks
  • `); } function build_solutions() { if (Array.isArray(solution_search_result)) { const viewAllHTML = userSubscribed ? `View All` : ''; var solutions_section = $(`
  • Solutions ${viewAllHTML}
  • `); let questionUrl = "/questions/xxx/"; let askUrl = "/ask/question/xxx/"; solution_search_result.forEach((elem) => { let url = ('course' in elem)?askUrl:questionUrl; let solution_type = ('course' in elem)?'ask':'question'; let subtitle = ('course' in elem)?(elem.course??""):(elem.book ?? "")+"    "+(elem.chapter?"Chapter "+elem.chapter:""); solutions_section.find('#whiletyping-solutions').append(` ${elem.text} ${subtitle} `); }); $('#search-solution-options').empty(); if (Array.isArray(solution_search_result) && solution_search_result.length>0){ $('#search-solution-options').append(solutions_section); } MathJax.typesetPromise([document.getElementById('search-solution-options')]); } } function build_textbooks() { $('#search-pretype-options').empty(); $('#search-pretype-options').append($('#search-solution-options').html()); if (Array.isArray(textbook_search_result)) { var books_section = $(`
  • Textbooks View All
  • `); let searchUrl = "/books/xxx/"; textbook_search_result.forEach((elem) => { books_section.find('#whiletyping-books').append(` ${elem.title} ${ordinal(elem.edition)} ${elem.author} `); }); } if (Array.isArray(textbook_search_result) && textbook_search_result.length>0){ $('#search-pretype-options').append(books_section); } } function build_popup(first_time = false) { if ($('#search-text').val()=='') { build_pretype(); } else { solution_and_textbook_search(); } } var search_text_out = true; var search_popup_out = true; const is_login = false; const user_hash = null; function pretype_setup() { $('#search-text').focusin(function() { $('#search-popup').addClass('show'); resize_popup(); search_text_out = false; }); $( window ).resize(function() { resize_popup(); }); $('#search-text').focusout(() => { search_text_out = true; if (search_text_out && search_popup_out) { $('#search-popup').removeClass('show'); } }); $('#search-popup').mouseenter(() => { search_popup_out = false; }); $('#search-popup').mouseleave(() => { search_popup_out = true; if (search_text_out && search_popup_out) { $('#search-popup').removeClass('show'); } }); $('#search-text').on("keyup", delay(() => { build_popup(); }, 200)); build_popup(true); let prevbookUrl = `/search/pretype_books/`; let prebooks = null; try { prebooks = JSON.parse(localStorage.getItem('PRETYPE_BOOKS_'+(is_login?user_hash:'ANON'))); }catch(e) {} if (prebooks && 'previous_books' in prebooks && 'recommended_books' in prebooks) { if (is_login) { previous_books = prebooks.previous_books; recommended_books = prebooks.recommended_books; if (prebooks.time && new Date().getTime()-prebooks.time<1000*60*60*6) { build_popup(); return; } } else { anon_pretype(); return; } } $.ajax({ url: prevbookUrl, method: 'POST', data:{csrfmiddlewaretoken: "jVPhw94KmAchDyFPWNASOHggugkAFTVQcVvPSKoV5XRLDmW0HiZqsWrUrVXbfeD6"}, success: function(response){ previous_books = response.previous_books; recommended_books = response.recommended_books; if (is_login) { localStorage.setItem('PRETYPE_BOOKS_'+user_hash, JSON.stringify({ previous_books: previous_books, recommended_books: recommended_books, time: new Date().getTime() })); } build_popup(); }, error: function(response){ console.log(response); } }); } $( document ).ready(pretype_setup); $( document ).ready(function(){ $('#search-popup').on('click', '.search-view-item', function(e) { e.preventDefault(); let autoCompleteSearchViewUrl = `/search/autocomplete_search_view/`; let objectUrl = $(this).attr('href'); let selectedId = $(this).data('objid'); let searchResults = []; $("#whiletyping-solutions").find("a").each(function() { let is_selected = selectedId === $(this).data('objid'); searchResults.push({ objectId: $(this).data('objid'), contentType: $(this).data('contenttype'), category: $(this).data('category'), selected: is_selected }); }); $("#whiletyping-books").find("a").each(function() { let is_selected = selectedId === $(this).data('objid'); searchResults.push({ objectId: $(this).data('objid'), contentType: $(this).data('contenttype'), category: $(this).data('category'), selected: is_selected }); }); $.ajax({ url: autoCompleteSearchViewUrl, method: 'POST', data:{ csrfmiddlewaretoken: "jVPhw94KmAchDyFPWNASOHggugkAFTVQcVvPSKoV5XRLDmW0HiZqsWrUrVXbfeD6", query: $('#search-text').val(), searchObjects: JSON.stringify(searchResults) }, dataType: 'json', complete: function(data){ window.location.href = objectUrl; } }); }); });
    Which type of injector nozzle would be used in most diesel engine fuel systems built after 2007? A. Pintle valve C. Multiple-orifice B. Hard opening value D. Electrohydraulic | Numerade (2024)

    FAQs

    What are the different types of injector nozzles used in diesel engines? ›

    Hydraulic injectors are usually classified by the nozzle design. There is poppet, pintle, multi-orifice and electro-hydraulic styles. With each design category there are often subsets of styles such as those used strictly with in-direct injection (IDI) or direct injection (DI) applications.

    What is the most common fuel injection system used on new diesel engines? ›

    Common rail is a fuel injection system found in modern diesel engines. Common rail systems provide a level of flexibility which can be exploited for class leading emission control, power and fuel consumption.

    What is the nozzle on a diesel engine? ›

    The injector nozzle can be a sac-type (blind hole) or use a valve covered orifice (VCO) design, Figure 3 [2200] . Sac-type nozzles can have either a cylindrical or a conical sac. Injectors for modern diesel engines typically use a conical design.

    What type of injector nozzles are commonly used in direct injected engines? ›

    The hole-type nozzle is predominantly used in direct-injected engines [113] . Injectors fitted with this type of nozzle are indexed to the combustion chamber to accurately position the fuel sprays relative to the combustion chamber.

    Which nozzle is diesel? ›

    While this is often true, it is not always the case. There are no legal requirements for fuel nozzle colors. Today, diesel fuel is dispensed through nozzles that may be green, black, yellow or any other color the retailer desires.

    What are the 2 types of injector used in a common rail diesel engine? ›

    Common rail systems can use one of several injector designs:
    • servo controlled electrohydraulic injectors,
    • servo controlled electrohydraulic injectors incorporating pressure amplification, or.
    • direct acting injectors.

    What type of injector does a diesel engine have? ›

    For diesel injection, there are three main types of fuel systems. They are the EUP, EUI, & common rail. All three are electronically controlled and direct. The following shows the difference between EUP, EUI, & common rail injector systems.

    What are the two most common types of injection pumps in diesel engine? ›

    The main types of injection systems include pump-line-nozzle, unit injector, and common rail. Modern injection systems reach very high injection pressures, and utilize sophisticated electronic control methods.

    What is the common rail diesel injection system? ›

    A fuel supply system in which two or more high-pressure pumps supply a common manifold or rail. Timing valves determine the timing and extent of fuel delivery to the cylinder injectors.

    What is a nozzle injector? ›

    injector nozzle in Automotive Engineering

    An injector nozzle is a fine sprayer through which fuel is injected into an engine. The top of the injector nozzle has a lot of holes to deliver a spray of diesel fuel into the cylinder.

    How many types of nozzles are there? ›

    Pneumatic nozzles can be divided into 5 different types:

    Semi-fine, semi-coarse fog nozzles. Clog-resistant nozzles. Blower-Air driven, ultra-low pressure nozzles. Steam-driven nozzles.

    Which type of nozzle is used by a direct injection combustion chamber? ›

    The most common type of nozzle used in today's diesel engine is the multi-hole design. This nozzle is mounted directly in the combustion chamber, so they are in high pressure and temperature environment.

    What is a pintle nozzle used for? ›

    According to preferred embodiments of the invention, a throttling-pintle nozzle arrangement is provided for fuel injection in an internal-combustion engine, especially a prechamber engine of the type including a nozzle needle which lifts off from its needle seat, counter to the direction of flow of the fuel under the ...

    What is the fuel injection system in a diesel engine? ›

    The function of the diesel fuel system is to inject a precise amount of atomized and pressurized fuel into each engine cylinder at the proper time. Combustion in a diesel engine occurs when this rush of fuel is mixed with hot compressed air.

    What is the best type of fuel injector? ›

    The sequential fuel injection is the most effective and efficient of all the fuel injections systems currently available in the automotive industry.

    What are the types of nozzles in injection system? ›

    Injectors Types of Nozzle in IC Engine: Pintle Nozzle, Single Hole Nozzle, Multihole Nozzle, Pintaux Nozzle | PDF | Fuel Injection | Diesel Engine.

    What do bigger injector nozzles do? ›

    With the same amount of injection pressure applied, the smaller nozzle will atomize the fuel better due to the smaller spray holes while the larger nozzle will not atomize as well, but it will flow more fuel in the same amount of allotted time.

    What are the different types of fire nozzles? ›

    The Four Nozzle Types

    Smooth Bore Nozzles are the most basic form of firefighting nozzle. They can create a solid stream of water. Smooth bore nozzles are considered a fixed flow nozzle. Fixed Flow Nozzles are a type of nozzle that flows a certain amount of water at a specified pressure.

    What is the difference between manual and automatic fuel nozzles? ›

    An automatic fuel pump nozzle cuts off the fuel supply when the vehicle being refuelled becomes full, preventing further fuel from being dispensed and an overfill from occurring. On the other hand, a manual refuelling nozzle needs human attention while filling the fuel.

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