以下为句子列表：
英文: A fuel economy model was set up for the engine and on its basis the matching strategy for continuously variable transmission with the engine was studied and the relationship between engine goal rpm and vehicle speed was determined.
中文: 摘要建立了发动机燃油经济性模型，并在此基础上研究了发动机与无级变速传动系统的匹配策略，确定了发动机的目标转速与车速的关系。
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英文: Any technology that can raise fuel economy can be used instead to increase horsepower.
中文: 只要是可以降低油耗的技术，就可用来提升马力。
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英文: Automotive engineers pursued the idea of matching an engine and a battery-powered electric motor to achieve greater horsepower and better fuel economy early in the 20th century but abandoned the concept as engines grew ever more potent and thus needed no
中文: 20世纪初，汽车工程师曾提出结合引擎和电池动力马达，以提高马力和降低油耗（提高燃料效率）的想法，但后来由于引擎马力越来越大，不需要辅助推进装置，这个概念也弃而不用。
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英文: Designed to reduce maintenance costs and improve fuel economy while maximizing payload.
中文: 为了减少维修费用,提高燃油经济性,同时尽量载荷.
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英文: So far hybrid drivetrains provide enough efficiency improvement and their electric motors develop such high acceleration that automakers have used the technology to raise both horsepower and fuel economy simultaneously.
中文: 目前的油电混合传动系统在效率方面大有改善，电动马达也具备优异的加速性能，因此汽车厂商采用混合传动技术同时提升马力和燃料经济。
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