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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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。

youdao