Hydrocarbon emission and fuel consumption are decreased to some extent, but the values are still high comparing to four-stroke engine.
碳氢排放和油耗有所降低，但仍高出四冲程发动机很多。
The present invention relates to a hydrocarbon trap positioned in the air intake system of a vehicle, upstream from the engine and wholly in the airflow.
本发明涉及一种碳氢化合物陷阱在车辆进气系统的位置，从上游的引擎完全在气流。
Standard test method for oxygenates and paraffin , olefin , naphthene , aromatic o - pona hydrocarbon types in low - olefin spark ignition engine fuels by gas chromatography.
用气相色谱对低烯烃火花点火引擎燃料芳香碳氢化合物类型，环烃，烯烃，石蜡和氧化物的标准试验方法。
The device is divided into an engine and a hydrocarbon generator. The engine and the hydrocarbon generator are connected through a spark plug oil-and-gas tube (11).
该装置分为发动机部分与烃气发生部分，在发动机和烃气发生装置之间通过一根火花塞油气管(11)连接。
Emissions of diesel engine cause serious harm to environment because of including a great deal of particulate, NOx and hydrocarbon.
柴油机的尾气中颗粒物、氮氧化物和碳氢化合物含量的很高，对环境造成了严重危害。
The paper describes the reasons of higher emission of hydrocarbon in the process of gasoline engine cold start. It also discusses the measures adopted mainly in reducing emission of hydrocarbon.
阐述了汽油机冷启动过程中碳氢化合物排放较高的原因，以及在降低碳氢化合物排放的问题上主要采取的措施。
In a testing of petrolic engine, about 70% to 80% of nonmethane hydrocarbon is emitted into atmosphere without catalysis conversion in theoment of coldstart, so that serious pollution is produced.
在汽油机的一个测试循环中，约占排放污染物总量70%～80%的非甲烷碳氢化合物是在汽油机冷起动阶段没有经催化转化而直接排入大气中，造成严重污染。
In a testing of petrolic engine, about 70% to 80% of nonmethane hydrocarbon is emitted into atmosphere without catalysis conversion in theoment of coldstart, so that serious pollution is produced.
在汽油机的一个测试循环中，约占排放污染物总量70%～80%的非甲烷碳氢化合物是在汽油机冷起动阶段没有经催化转化而直接排入大气中，造成严重污染。
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