Open Access
Review
Key Technologies to 50% Brake Thermal Efficiency for Gasoline Engine of Passenger Car
Xinke Miao
, Bingxin Xu
, Jun Deng
, Liguang Li*
Author Information
Submitted: 13 Aug 2024 | Revised: 6 Dec 2024 | Accepted: 17 Dec 2024 | Published: 20 Jan 2025
Abstract
As fuel consumption and emissions regulations become increasingly stringent, various advanced strategies have been proposed to achieve higher efficiency in internal combustion engines. This paper reviews the advancements in thermal efficiency of gasoline engines and analyzes the key technological methods to achieve over 50% brake thermal efficiency (BTE). The technological routes proposed for high-efficiency gasoline engine are primarily focused on high compression ratios and lean combustion combined with novel combustion technologies. Supporting technologies mainly include Atkinson/Miller cycles, intake boosting, exhaust gas re-circulation (EGR), water injection, thermal barrier coatings, friction reduction, structural optimization, and combustion diagnostics and control.
Keywords
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Issue
Volume 4, Issue 1How to Cite
Miao, X., Xu, B., Deng, J., & Li, L. (2025). Key Technologies to 50% Brake Thermal Efficiency for Gasoline Engine of Passenger Car. International Journal of Automotive Manufacturing and Materials, 4(1), 1. https://doi.org/10.53941/ijamm.2025.100001
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