四冲程发动机

50mL四冲程发动机降低油耗的技术探讨

A Technical Inquiry into Fuel Reduction of 50 mL 4-stroke Engine

在小型四冲程发动机上进行电控LPG喷射系统改装后，为降低发动机的NOx排放，在该系统上进行了EGR的实验研究。

After the refit of LPG fuel system on a Small 4-stroke engine , Exhaust Gas Recirculation is adopted and tested to reduce the NO_x emission .

应用开发出的ESCS系统分别对二冲程发动机及四冲程发动机的排气净化系统进行模拟计算，分析进、排气管中压力波对发动机动力性能的影响。

Exhaust system can be respectively calculated in two-stroke and four-stroke engines by the developed ESCS system for application . It can also analyze the pressure wave in the intake pipe and exhaust pipe which infect on engine dynamical performance .

MWM发动机在普通四冲程发动机的气缸侧壁增加了一个排气口，且由气门控制其开闭，通过处于不同位置气门的配合工作，从而实现其各种工作模式和工作过程。

MWM engine add an exhaust port at a four-stroke engine cylinder wall , and it be controlled to opening or close by a valve , this structure can make the engine has different working mode by different valve working together .

新型四冲程发动机液压可变配气机构的动态仿真与分析

Dynamic Simulation on a Novel Electro-Hydraulic Variable Valve Train for Four-Stroke Engines

活塞是四冲程发动机的重要部件。

The piston is an important part of a four-stroke cycle engine .

双凸型燃烧室在四冲程发动机上的应用

The Application of Double Convex Combustion Chamber to 4-stroke Engine

提出一种新型的四冲程发动机液压可变配气机构。

A novel electro-hydraulic fully variable valve train for four-stroke engines is proposed .

单缸四冲程发动机的模型建立、参数选择和模拟

Modelling , Parameter Selection and Simulation of a Single Cylinder Four Cycle Engine

日本摩托车四冲程发动机用油将采用性能分类法

Performance Classification Method to Be Adopted in Motorcycle 4-stroke Engine Oil in Japan

本系统主要是针对单杠四冲程发动机的控制，经过移植并作相应的调整后，可用于双杠四冲程发动机的控制。

This system can be used in four-stroke engine by replanting and adjusting .

四冲程发动机活塞裙部纵向型线的设计

A Design of the Longitudinal Molded Line of the Piston Skirt for 4-stroke Engine

139FM四冲程发动机用钢带组合油环的研制

R & D of Steel-belted Compound Oil Control Ring for 139 FM 4-stroke Engine

本田开发成功小排量四冲程发动机

A Successful Mini 4-stroke Engine Developed by Honda

由于二冲程和四冲程发动机，自行车是一种权力的道路的一个缩影。

With two-stroke and four-stroke engines , the bike is an epitome of power on road .

四冲程发动机的水平。

Four stroke horizontal engine .

进气谐振技术能有效地改善四冲程发动机低速扭矩特性，国外在产品上已有应用。

The resonant induction technique can improve torque characteristics of 4 - stroke IC engines at low speed .

四冲程发动机加速不良易熄火原因分析与排除

An Analysis of Causes of Being Prone to Miss Fire due to Bad Acceleration of 4-stroke Engine and Its Remedy

基于四冲程发动机的工作原理，用键合图对一四缸汽油机进行了建模。

Based on the working principle of the four-stroke engine , we model the four-cylinder gasoline engine using bond graph technique .

在四冲程发动机，四冲程汽缸中的活塞需要完成一个工作循环。

In the4-stroke engine , four strokes of the piston in the cylinder are required to complete one full operating cycle .

碳氢排放和油耗有所降低，但仍高出四冲程发动机很多。

Hydrocarbon emission and fuel consumption are decreased to some extent , but the values are still high comparing to four-stroke engine .

四冲程发动机凸轮轴两轴头与气缸盖两轴孔的结构型式依不同车型而有所差异，维修方法也不同。

The structure of the shaft noses and the shaft holes is different with various types of motorcycles , and different in maintenance as well .

外特性对比试验结果表明，四冲程发动机的动力性、燃油消耗率和耐久性能均得到了明显改善。

The results of comparison tests under full throttle opening showed that the power output , fuel consumption and durability were improved considerably on a four-stroke engine .

根据二冲程与四冲程发动机的结构和工作原理，提出发动机的多行程工作模式理论，描述其工作原理、工作过程和一定区间连续可变压缩比的工作原理。

According to structure and working theory of two-stroke engine and four-stroke engine , theory of engine with multiple-stroke working mode is put forward . Its working theory , working process and continuous changeable compression-ratio in a certain range are described .

通过对摩托车单缸四冲程发动机曲轴滚动轴承负荷的分析，了解燃烧气体力、往复惯性力和不平衡旋转离心力对轴承内圈和外圈的影响。

The load on crankshaft ball bearing of a single cylinder 4-stroke motorcycle engine is analyzed in order to observe the effect of combustion pressure , reciprocating inertia force and unbalanced rotational centrifugal force on inner and outer ring of ball bearings .

磷酸二酯酶4D基因与缺血性卒中浅谈四冲程摩托车发动机排烟的原因及对策

Phosphodiesterase 4 D Gene and Ischemic Stroke Smoking of 4 - stroke Motorcycle and hs Countermeasures

将分流量热式流量计直接安装单缸四冲程SD1110发动机进气道上进行试验，监测到此时流量计的输出波形。

Taking an experiment on the single-cylinder four-stroke engine SD1110 connected with the partial flow thermal gas meter directly , and monitoring the output waveform on the real time .

四冲程摩托车发动机零件的耐磨性问题

Wear Resistance of the parts for 4 & stroke Motorcycle Engine

四冲程摩托车发动机润滑油的发展与评价

Development and Evaluation of Lubricant for 4 - stroke Engine of Motorcycle

四冲程摩托车发动机专用油的应用

The Application Of Specific Engine Oil Quality For Four-Stroke Motor