Ideally, an ethanol engine needs a compression ratio of 19:1 instead of the 10:1 typical of petrol engines.
理想情况下，乙醇发动机需要的压缩比是19：1，而不是典型汽油引擎的10：1。
Still, the new engine gets a 14-to-1 ratio for fuel-air compression, compared with the more common 10-to-1 ratio for engines.
新款引擎的燃料空气压缩率高达14比1，而一般的引擎只有10比1。
The amount that the mixture is compressed is determined by the compression ratio of the engine.
混合气的压缩量，由发动机的压缩比决定。
The test result shows that using EGR is an important approach to solve related difficulty for high compression ratio methanol engine.
试验结果初步说明利用废气再循环，是高压缩比甲醇发动机解决相关问题的重要途径。
The research discussed the influence of compression ratio and ignition advanced angle to performance of LPG engine.
本文研究了发动机压缩比和点火提前角对液化石油气发动机性能的影响。
This subsequently facilitates a compression ratio of 10.0:1, which is very high for a turbocharged engine.
这有利于随后的10.0：1压缩比，这是非常高的涡轮增压发动机。
The emission characteristics of a DME fueled HCCI engine with compression ratio of 10.7 was studied experimentally.
试验研究了压缩比为10 7的二甲醚均质充量压缩点燃燃烧发动机的排放特性。
The hardware and software of ignition advanced angle controller are designed in this base. LPG engine with high compression ratio had been tested.
在此基础上设计了点火提前角控制器的软件和硬件，做了高压缩比的LPG发动机试验。
There is a direct correlation between the compression ratio of an engine and its fuel octane requirements.
发动机的压缩比和燃料的辛烷值有直接的关系。
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。
The results show that the compression ratio has a significant influence on the engine performance, combustion and emissions.
研究结果表明，压缩比对发动机性能、燃烧和排放有较大影响。
The results show that the compression ratio has a significant influence on the engine performance, combustion and emissions.
研究结果表明，压缩比对发动机性能、燃烧和排放有较大影响。
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