Welcome to Journal of Automotive Safety and Energy,
汽车安全与节能学报

Journal Of Automotive Safety And Energy ›› 2016, Vol. 07 ›› Issue (01): 1-13.DOI: 10.3969/j.issn.1674-8484.2016.01.001

• Progress & Prospects •     Next Articles

Prospect of energy-saving technology roadmaps of engines for hybrid passenger cars

SHUAI Shijin, OUYANG Zizhou, WANG Zhi, XU Hongming   

  1. 1. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China;
    2. Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing 100081, China
  • Received:2016-01-06 Online:2016-03-25 Published:2016-04-05
  • Supported by:

    Prof. SHUAI Shijin, A professor in the State Key Laboratory of Automotive
    Safety and Energy at Tsinghua University, a vice director
    of the Center for Combustion Energy at Tsinghua
    University, a vice director of the Alternative Fuel Vehicles
    Committee of Society of Automotive Engineering China
    (SAE-China), the secretary general of the Oil Products
    and Clean Fuels Committee of Chinese Sociaty for
    Internal Combustion Engine (CSICE). His research field
    covers combustion and emissions control in internal
    combustion engines.

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Abstract:

Hybrid technology is an effective way for passenger cars to meet future regulations. Engine
performance has great influences on power performance, fuel economy and emission of hybrid cars. This paper
reviewed the state-of-art and development process of engines for hybrid passenger cars in the world, compared
and analyzed the engines’ energy-saving technology roadmaps. Four-stroke natural aspirated (NA) highexpansion
ratio gasoline engines and boosted gasoline direct injection (GDI) engines are the two mainstream
technology roadmaps of engines for conventional hybrid passenger cars. In the future, the two pathways will
evolve in parallel. The luxury hybrid passenger cars mainly use the boosted GDI engines while the economic
hybrid passenger cars mainly adopt the NA high-expansion ratio gasoline engines. Small-displacement fourstroke
gasoline engines will be the mainstream range-extender engines. Engines for hybrid passenger cars tend
to become smaller, more fuel-efficient with lower manufacturing cost.

Key words: hybrid passenger cars, engines for hybrid passenger cars, range-extender engines