Test and research work is carried out on engine test bench to survey the effect of gum content in gasolene upon gasolene engine power and harmful exhaust gas emission density.
在发动机试验台上进行了汽油中胶质含量对汽油机动力性和有害气体排放浓度影响的试验研究。
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Valve deposits. If the fuel has excessive amounts of gum in it, some of this gum may be deposited on the intake valve as the air-fuel mixture passes the valve on the way to the engine cylinder.