Gasoline car engines use spark ignition whereas diesel engines use compression ignition.
汽油机使用火花点火，而柴油机使用压缩点火。
The two major engine types in use are spark ignition (gasoline engine) and compression ignition (diesel engine) which use different types of fuel.
常用的两大类内燃机是火花点火式(汽油机)和压缩点火式(柴油机)内燃机，他们使用不同种类的燃料。
Some key parameters such as gasoline vapor mole quality and compression factor, vapor pressure, and vapor-air diffusion coefficient were decided and recommended.
对汽油蒸气的一些关键物性参数，如油气摩尔质量、压缩因子、蒸气压及油气——空气扩散系数等给出了推荐值或计算式。
Theoretical calculations are made of the effect of the jet hole on gas motion inside the TJ-jet combustion chamber of 492qs gasoline engine during compression and combustion processes.
通过理论计算研究了492QS汽油机射流孔对射流燃烧室内气体运动的影响。
So we improve the old truck gasoline engine with side valve by raising its compression ratio to 7.2: 1 by using partial spherical chamber. The intake system is also improved.
为此，对一部分解放牌侧置气门汽油机的燃烧室改造为球形，提高压缩比到7.2：1，并改进进气系统，从而使功率、扭矩和燃油经济性都有所提高。
So we improve the old truck gasoline engine with side valve by raising its compression ratio to 7.2: 1 by using partial spherical chamber. The intake system is also improved.
为此，对一部分解放牌侧置气门汽油机的燃烧室改造为球形，提高压缩比到7.2：1，并改进进气系统，从而使功率、扭矩和燃油经济性都有所提高。
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