lj474q3e2汽油机_jl丫一4g15型汽油机

1.五菱之光L2y和LXA发动机，哪个耐用呢？

通家福家STJ6400A车型配置项目 描述 长/宽/高 4030 / 1620 / 1900 燃料种类 汽油 排放标准 国 Ⅳ 轴数 2 轴距 2700 轮距前/后 1386 / 1408 发动机型号 LJ474Q3E2 发动机形式 直列四缸十六气门电喷发动机 排量 1.298 额定功率/ 转速 60.5 / 6000 最大扭矩/ 转速 102 / 3000~3500 变速箱形式 5档手动 轮胎规格 175/70R14 LT 油箱容积 45 最高车速 135 最小转弯直径 10.4 前悬架 麦弗逊式独立悬架 后悬架 五片式钢板弹簧非独立悬架 制动系统 前盘后鼓式双管液压制动+ 真空助力系统 座椅数 5~8

五菱之光L2y和LXA发动机，哪个耐用呢？

This?paper?systematically?describes?the?knock?phenomenon.

本文对汽油发动机的爆震现象进行了系统的阐述。

The?working?principle,?harm?and?suppression?measures?of?engine?knock?are?described.?From?analysis?the?structure,?working?principle?of?knock?sensors,?detection?of?failures?of?detonation?sensors?are?discussed.?Then?it?gives?examples?of?fault?of?lj474q3e2?knock?sensor.

从理论上概述了发动机爆震现象的产生机理、危害以及抑制措施，分析发动机爆震传感器的结构、工作原理以及常见故障的检测方法，并给出lj474q3e2爆震传感器故障维修实例。

This?paper?describes?a?system?for?knock?detection?in?automobile?engine?using?spark?plug?as?a?detecting?probe.

本文描述了一种直接利用火花塞电极作为传感器检测汽车发动机爆震的方法。

Furthermore,?the?lication?of?dds?(?direct?digital?synthesis)?for?engine?knock?detection?is?introduced.

介绍了直接数字合成技术（direct?digital?synthesis，dds）在发动机爆震检测中的应用。

This?paper?reports?the?results?of?a?study?on?end?gas?autoignition?and?knock?in?thespark?ignition?engines.

本文介绍了火花点火发动机的末端气体自燃和爆震研究的结果。

The?lication?of?fiber?optic?photoelectric?sensors?to?detect?and?measure?engine?combustion?and?knock?was?investigated.

利用光纤传感器对内燃机缸内燃烧及其爆震进行探测，探索光纤传感技术在燃烧测量中应用的可行性。

Making?use?of?discrete?welet?transform?to?extract?knock?feature?is?researched.

研究了利用离散小波变换提取爆震特征的方法。

Knock?signal?characteristic?can?be?drawn?by?knock?sensor?and?can?be?utilized?to?judge?the?knock?to?take?place?accurately?and?the?knock's?intensity?size.

利用爆震传感器提取爆震信号特征，可以准确地判断爆震是否发生，爆震强度大小，进而控制汽油机工作在期望的轻微爆震工况下。

The?knock?detection?system?makes?spark?advance?angle?roach?critical?knock,?oids?strong?knock?in?gasoline?engine,?and?improves?the?power?performance?and?fuel?economy?performance.

爆震检测系统可以使汽油机的点火提前角接近爆震临界点，避免汽油机发生强烈爆震，使其具有更好的动力性和经济性。同时还可以减小制造公差、环境变化和磨损等因素对产品造成的影响。本文作者针对cac480发动机爆震检测技术做了比较深入的研究，并提出了具体的解决方案。

Knock?detection,?identification?and?control?for?hcci?engine?are?of?great?significance?to?the?practical?lication?of?hcci?combustion?technology?because?the?high?load?range?of?hcci?is?limited?mainly?by?knock?and?fast?combustion?will?lead?to?knock?too.

在hcci大负荷边界主要受到爆震的限制，在hcci工况内过快的燃烧速度也会带来爆震问题，因而，hcci发动机的爆震检测与识别以及爆震控制等问题，对于hcci燃烧技术的实际应用，具有重要意义。

A?new?kind?of?experiment?equipment?is?designed?for?the?starting?knock?of?r4102dl?diesel?engine.

设计了一种新型试验装置，用于r4102dl柴油机起动敲缸的试验研究。

In?order?to?prevent?piston?from?knock?and?cylinder?score,?modern?pistons?with?convex?contour?and?vari-elliptical?cross-section?are?designed,?which?can?prolong?piston?longevity?and?enhance?engine?performance.

为了防止在高温、高压下工作的活塞发生敲缸和拉缸，提高其使用寿命和工作性能，活塞常被设计成中凸变椭圆。

The?reason?for?locomotive?diesel?engine?knock?is?analyzed,?and?the?diagnosis?and?treatment?method?of?it?were?put?forward.

针对运用中内燃机车柴油机敲缸的现象及危害，分析了产生敲缸的原因，并提出了相应的故障判断和处理方法。

The?results?show?that?the?actual?influence?is?more?serious?than?estimation.?Therefore,?in?the?design?of?diesel?engine,?the?influence?of?starting?knock?should?be?taken?into?consideration.

结果表明：实际起动敲缸的影响比估计的情况要严重，在柴油机的设计中要充分考虑起动敲缸对强度的影响因素。

R4102d.?L.diesel?engine?was?set?as?an?example?to?study?the?influence?of?starting?knock?on?the?strength?of?connecting?rod,?piston?and?piston?ring.

以r4120d.l型柴油机为例，试验研究了柴油机起动敲缸对连杆、活塞、活塞环强度的影响。

Piston?cylinder?knocking?and?crank?beating?knock.?Which?stand?for?familiar?engine?abnormal?sounds?are?compared?and?analyzed.?The?result?proves?that?the?signal?to?noise?ratio?is?increased?and?the?higher-frequency?useful?signal?is?recovered.?The?time-frequency?map?can?display?the?features?corresponding?to?time?and?frequency?of?fault?signal?which?offers?a?practical?strategy?for?diagnosis.

试验研究首先以模拟的信号模型为例，再针对实际的活塞敲缸响和曲轴轴承响两种常见异响故障进行比较分析，结果表明，分层阈值降噪法可以提高信噪比，恢复较高频率的有用信号，小波时频图可以清晰地呈现故障信号的时域和频域特征，为诊断提供一种切实可行的策略。

Ville?distribution?(?wvd)?is?lied?to?the?separation?of?continuous?knock?response?in?diesel?engine.

利用wvd方法对柴油机中连续撞击信号进行分离，取得了较好的效果。

After?analysis,?it?was?concluded?that?the?pulling?chains?knock?vehicle?bottom?rigid?body?with?high-speed?rebound?after?hitting?the?side?frame?of?glass?cover?board?was?the?main?reason?of?abnormal?signal.

经分析认为，该异常冲击信号的产生是由于牵引链条脱钩后撞击玻璃盖板边框后高速反弹敲击车辆底部刚体所致。

This?paper?introduces?the?basic?principle?and?characteristic?of?the?higher?position?billet?extractor?which?has?been?installed?in?the?front?of?reheating?furnace?in?the?middle?plate?plant.?The?subsurface?scrapes?and?knock?marks?has?been?eradicated?during?the?process?of?extracting?the?billet.

介绍新研制的中厚板高位出钢机的基本原理与特点，已用于某中板厂加热炉炉前，彻底根除了出钢时下表面擦伤和撞击疤痕的故障，提高板坯质量，并值得参考借鉴。

The?solvable?condition?for?the?mps?simulations?was?investigated?in?an?enclosed?calculation?region?and?the?reason?for?the?numerical?instability?was?analyzed?when?the?mps?particles?knock?at?the?solid?wall?or?liquid?surface?is?with?a?relatively?large?velocity.

分析了mps方法求解封闭区域流动的有解条件、自由面流动中粒子以较大速度撞击壁面或液面时出现的不稳定现象。

1，五菱之光L2y和LXA发动机耐用性能差不多！

2，五菱之光LXA是1.149的发动机，属于高转速大扭矩。在起步上有些软，车速提上去后感觉还是挺好的。不过LXA发动机已经不再装配在6390上了。现在的6390只有QF（L2Y)和BF(LAQ)了。L2Y这款发动机装配在6390QF上，应该与LXA性能差不多吧！