In a diesel engine, there is no spark plug. Instead, diesel fuel is injected into the cylinder, and the heat and pressure of the compression stroke cause the fuel to ignite.
柴油发动机内没有火花塞，取而代之的是将柴油喷入发动机气缸，然后压缩冲程在高温高压下引起燃料点火。
However, a two-stroke engine USES more gasoline and burns lots of oil, so it is far more polluting.
二冲程发动机使用更多的汽油，燃烧更多的燃料，所以产生更多的污染。
What is the difference between a two-stroke and a four-stroke engine? Most chain saws and boat motors use two-stroke engines.
二冲程和四冲程发动机的区别：大多数链锯和摩托艇使用的是二冲程发动机。
You have to mix oil into the gas in a two-stroke engine because the holes in the cylinder wall prevent the use of rings to seal the combustion chamber.
在二冲程发动机中你必须混和燃料和气体，因为气缸壁上的孔阻止使用活塞环密封燃烧室。
A two-stroke engine has no moving valves, and the spark plug fires each time the piston hits the top of its cycle.
二冲程发动机没有移动的阀，火花塞每次点火活塞到达循环顶端。
However, in a compressed air engine, no additional energy is gained if the air in the cylinder is compressed on the upward stroke of the piston.
然而，在压缩空气引擎，不需要额外的能源是涨，如果空气中的气缸压缩的向上中风活塞。
Even when Saab finally decided to go with a four-stroke engine in 1967, it kept things weird by using a V-4.
就算萨博在1967年最终决定使用四冲程发动机，它还是把发动机搞成个V4，萨博总能把事情搞的古怪好玩。
The vessel to be propelled by a single-acting two stroke supercharged cross head Diesel engine, acting to a fixed pitch propeller .
该船的主机为单作用，二冲程，带涡轮增压器的十字头柴油发动机，并且螺旋桨为定距桨。
How can you not love a two-door wagon that seats seven (a third row folded up from the floor) and has a two-stroke, three-cylinder engine?
作为一款两门旅行车却有7个座位(第三排座椅可以折叠)，而且它还装着两冲程的三缸发动机，我们怎能不喜欢它？
By adjusting the linkage to allow a power stroke that is longer than the compression stroke, the engine can achieve greater efficiency than with the Otto cycle engine.
通过调整挂钩，使权力中风，比压缩冲程长，发动机可以达到，但与奥托循环发动机的效率。
Why is the two-stroke engine widely used on board ship?
为什么是二冲程发动机被广泛使用在船上？
If it needs only two strokes to complete a cycle, it is called a two-stroke cycle engine or, for short, a two-cycle engine.
如果发动机完成一个工作循环，只需要两个行程，就称为两冲程循环发动机，或者简称两冲程发动机。
By the time the crankshaft completes two revolutions, each cylinder in the engine will have gone through one power stroke.
曲轴转两周，发动机里的气缸完成一个作功行程。
In order to overcome the problems of overrun for the two-stroke engine, a freewheel device was fitted.
为了克服这两个问题的超支冲程发动机，一个飞轮装置安装。
The aircraft is powered by a 360hp air-cooled, four-stroke, petrol (gasoline) piston engine.
飞机由一台360马力风冷、四冲程汽油活塞发动机提供动力。
This is very similar to a 2-stroke engine.
这是非常相似的2冲程发动机。
Otto built the practical four-stroke internal combustion engine called the "Otto Cycle Engine, " and as soon as he had completed his engine, he built it into a motorcycle.
奥托制造了第一台实用的四冲程内燃机，叫做“奥托循环发动机”，并且当完成制造他的发动机后他就把发动机安装在摩托车上。
On a 2-stroke engine, the upward stroke is the compression stroke.
在2冲程发动机，向上中风是压缩行程。
"Great Wall" brand four stroke motorcycle oil obtained JASO quality certificate, and specially formulated to meet the performance requirements of four stroke motorcycle engine.
长城“牌四冲程摩托车发动机油已获得J ASO质量认证，能够满足四冲程摩托车发动机的特殊性能要求。”
The purpose of the paper is to carry out the simulated working process calculation of the two stroke low speed diesel engine by applying the developed calculating program.
本文的主要目的是通过建立船用柴油机工作过程的计算程序，对船用低速二冲程柴油机工作过程进行仿真计算。
Two-stroke engine has its intrinsic advantages in terms of high specific power, compactness, light weight, low cost, etc.
二冲程汽油机具有升功率大、机械损失小、结构简单、制造成本低以及便于维修等特点。
An engine model was established for the 4 cylinder 4 stroke gasoline engine. And the fuel MAP of the mode engine was obtained by scaling experiment.
针对四缸四冲程汽油发动机，建立了合理的发动机数学模型，并对模型发动机进行仿真标定实验，获得喷油MAP图。
This paper introduces the design of valves of four-stroke motorcycle engines and relating problems on material selection and their influences on engine performances.
本文介绍了四冲程摩托车发动机气门设计和选用材料的有关问题，及对发动机性能的影响。
The two-stroke motorcycle special engine oil should have low smoke pollution property, good lubricity, detergency, flowing property and mixotropic ability.
对二冲程摩托车油要求有良好的润滑性、排烟性、清净性、流动性和混溶性。
The four strokes in the four-stroke-cycle engine, in their proper order, are intake, compression, power, and exhaust.
四冲程循环发动机中，四个冲程的固定顺序是：进气、压缩、作功和排气。
Compositions and features of the base oil used in producing FB two-stroke engine oil were briefly described.
介绍了FB二冲程油基础油的组成和特性，进行了添加剂的筛选和配方研制。
Compositions and features of the base oil used in producing FB two-stroke engine oil were briefly described.
介绍了FB二冲程油基础油的组成和特性，进行了添加剂的筛选和配方研制。
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