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。
2
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。
3
Standard test method for oxygenates and paraffin , olefin , naphthene , aromatic o - pona hydrocarbon types in low - olefin spark ignition engine fuels by gas chromatography.