论文部分内容阅读
降低油耗和废气污染,同时加大输出功率。这是当前汽车发动机制造业的主要课题。美国的一些新型汽车发动机,其配气方式变一缸两阀为一缸四阀(即每个气缸有两个气阀、两个排气阀),收效颇佳。对某些型号四缸发动机进行试验,原型为五○○○转/分,120马力,改成四阀之后,为六二○○转/分,185马力。据说其原因是由于加快了气流速度和改善了了油气混合状况。这种方法还能进一步提高压缩比,增大功率。还生产出压缩比为十点五比一而仍使用普通汽油的发动机。
Reduce fuel consumption and exhaust pollution, while increasing output power. This is the current automotive engine manufacturing industry’s main topic. Some of the new US car engines, the valve with a way to change the two valves for the cylinder four valves (that is, each cylinder has two valves, two exhaust valves), quite effective. For some models of four-cylinder engine test, the prototype is 500 rpm, 120 horsepower, into a four-valve, after 6,200 rev / min, 185 horsepower. It is said that the reason is due to speed up the gas flow rate and improve the mixing status of oil and gas. This method can further improve the compression ratio, increase power. It also produces engines with a compression ratio of 10: 5 and still using regular gasoline.