The two major engine types in use are spark ignition (gasoline engine) and compressionignition (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。
2
The result show that performance of engine will be improve by increasing compression ratio of engine and using best ignition advanced angle.
试验结果表明提高发动机压缩比和选择最佳点火提前角后，发动机性能有一定提高。
3
Improper combustion, due to a rich mixture, defective ignition system, loss of compression in the engine, a cold engine, and so forth, will result in carbon deposits on the exhaust valves.