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环保法规日趋严格,汽车燃油价格不断呈上涨势头,控制二氧化碳排放已经处于实际运行阶段。在此背景下,汽车生产厂家积极寻求对策,不断开发新产品,混合动力车(HV)、冲电式混合动力车(PHV)、电动车纷纷投放市场,但目前当务之急应是改善现行内燃发动机的燃费问题及开发环境友好产品。内燃发动机的改良主流是改善发动机变速箱、使用生物燃料及完善社会基本设施来减少二氧化碳排放
Environmental laws and regulations are becoming more and more stringent. Automotive fuel prices continue to rise. The control of carbon dioxide emissions is already in the actual operation stage. Against this backdrop, automakers are actively seeking ways to continuously develop new products. Hybrid electric vehicles (HV), hybrid electric vehicles (PHVs) and electric vehicles are launched on the market. However, the most urgent task now is to improve the existing internal combustion engine Fuel costs and development of environment-friendly products. The mainstream improvements to internal combustion engines are to improve engine gearboxes, use biofuels and improve social infrastructure to reduce carbon dioxide emissions