专业英语准论文The engine Ignition-system )-豆柴文库

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TheengineIgnition-systemServiceandMaintenance






学院：
学期：2010-2011第二学期
课程：专业英语
专业：车辆工程
班级：
学号：
姓名：





TheengineIgnition-systemServiceandMaintenance
Thegasolineengineinthecompressiononthecheckpoint,closetothemixtureisthesparkplugignites,thusburningtodowork,forthis,theforeigngasolineengineinthecombustionchamberareequippedwiththesparkplug.Thesparkplughasacentralelectrodeandasideelectrode,twooftheinsulationbetweenelectrodesis.Whentwoelectrodesinthesparkplugsanddcvoltageisthevoltagebetweenandincreasetoacertainvalue,thesparkplugthegapbetweentwoelectrodeswillbebreakdownandproduceelectricspark,cansparkpluginthegenerationbetweentwoelectrodestominimumvoltageelectricsparkofcalledbreakdownvoltage;Cansparkplugthegenerationbetweentwoelectrodesinalltheequipmentofelectricsparkcalledengineignitionsystem.
Composition:Theignitionsystemmainlybythepowersupply,theignitionswitch,ignitioncoil,cut-outrelay,withelectricalappliances,capacitor,sparkplug,highvoltagewires,additionalresistanceetc
Traditionalignitionsystembybatteries,generators,ignitioncoil,cut-outrelay,sparkplugetc.Commontypeandtraditionalignitionsystemissimilartouseelectroniccomponentstoreplacebreakelectricalappliances.Electronicignitiontypeareallfullelectronicignitionsystem,completelycancelledamechanicaldevice,electronicignitioncontrolsystembytime,includingbatteries,generators,ignitioncoil,sparkplugsandelectroniccontrolsystem,etc.
Function:Theautomotiveignitionsystemhastwobasicfunctions:itmustcontrolthesparkandtimingofthesparkplugfiringtomatchvaryingenginerequirements,anditmustincreasebatteryvoltagetoapointwhereitwillovercometheresistanceofferedbythesparkpluggapandfiretheplug.
Principleofwork:Thepowersupplyisthebattery,thevoltagefor12Vor24V,ignitioncoilandbrokenbyelectricalproduceshighpressurecommon10000Vabove.Theprimaryloopandtimesextremelypointscircuit.Theignitioncoilisactuallyatransformer,mainlybytheprimarywinding,awindingandcoreoftime.BrokenappliancesareaCAMofthemanipulationoftheswitch.BrokenappliancesCAMdri