In particular, Horiba's engine emissions analyzers are contributing greatly to the development of low-emission, fuel-efficient engines being carried out by automakers worldwide.

堀场的发动机排放分析仪一直在促进着世界范围内的汽车厂商对低排放高燃烧效率发动机的开发；

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This paper analyses the forming and effects of motorcycle. exhaust emissions, and points out the purifying approach of both in-engine and out-engine parts.

本文对摩托车排气污染物的形成、影响因素进行了分析，并指出了机内与机外净化措施。

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Improvement was carried out on a model of heavy duty diesel engine to optimize combustion process and emissions.

以优化燃烧过程、改善排放性能为目标，对某重型柴油机进行改进。

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