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汽车安全与节能学报

JASE ›› 2018, Vol. 9 ›› Issue (3): 339-351.DOI: 10.3969/j.issn.1674-8484.2018.03.014

• 汽车节能与环保 • 上一篇    下一篇

车用1.5 L 涡轮增压直喷汽油发动机开发

徐 政1, 2，龚伟国1，Scholten I 1，平银生1, 2，李伟军1, 2，王 康1，殷海庭1, 2，程传辉1, 2，王绍明1, 2，张小矛1, 2，王艳军1, 2，杨 洋1   

  1. （1. 上海汽车集团股份有限公司乘用车公司技术中心，上海 201804，中国；2. 上海市汽车动力总成重点实验室，上海 201804，中国）
  • 收稿日期:2018-07-21 出版日期:2018-09-30 发布日期:2018-10-08
  • 作者简介:徐政(1966—），男（汉），广东，国家“千人计划”特聘专家。E-mail: xuzheng01@saicmotor.com。
  • 基金资助:

    上海市科学技术委员会资助项目(4DZ2260600)。

Development of 1.5-L turbocharged GDI engine at SAIC motor  

XU Zheng1, 2, GONG Weiguo1, Scholten I1, PING Yinsheng1, 2, LI Weijun1, 2, WANG Kang1, YIN Haiting1, 2,#br# CHENG Chuanhui1, 2, WANG Shaoming1, 2, ZHANG Xiaomao1, 2, WANG Yanjun1, 2, YANG Yang1   

  1. (1. SAIC Motor Technical Center, Shanghai 201804, China; 2. Shanghai Key Laboratory of Automotive Powertrain, Shanghai 201804, China) 
  • Received:2018-07-21 Online:2018-09-30 Published:2018-10-08

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摘要：

       为满足消费者需求和日益严格的法规要求，上汽乘用车公司通过采用缸内中置直喷、高效涡轮增压、进排气可变正时技术、集成式排气歧管等一系列先进节能减排技术开发了全新1.5 L 四缸汽油发动机，搭载荣威名爵多款车型，实现了低油耗、低排放、低噪音、高性能、高可靠性等设计目标，并在此基础上进行了技术升级开发。结果显示：通过燃烧系统优化及Miller 循环应用，在保持250Nm 最大扭矩的同时，提升发动机热效率，降低整车新欧州行驶循环（ NEDC）油耗6.5%；通过燃烧系统、增压器和冷却水套等一系列设计优化，最大扭矩提升至275 Nm，低速增压响应提升25%；通过喷雾油束优化和35 MPa 高压喷油系统应用，发动机颗粒排放大幅降低，使得整车在全球轻型汽车测试循环（WLTC）工况下不带汽油机颗粒捕集器（GPF）达到国6b 颗粒排放限值要求。

关键词: 增压汽油发动机, 直喷汽油机（GDI）, Miller 循环, 颗粒排放 

Abstract:

SAIC Motor Corporation Limited (SAIC Motor) developed an all-new 1.5 L 4-cylinder turbocharged gasoline direct injection engine to meet the market demand and increasingly stringent requirement of regulations, by applying a series of advanced fuel efficient and emission reduction technologies, such as central gasoline direct injection, efficient turbo charging with low inertial, dual variable valve timing, integrated exhaust manifold, etc. The engine was equipped on a number of ROEWE and MG vehicles, and achieved the design objectives of low fuel consumption, high performance, good noise, vibration, harshness (NVH) and low emissions. The development of technology upgrades were carried out on the basis of this engine. The results show that the thermal efficiency is further improved while maintaining the same 250 Nm maximum torque level through combustion system optimization and application of miller cycle. The vehicle fuel consumption is reduced by 6.5% in New European Driving Cycle (NEDC). The turbo charger efficiency improvement and cylinder head block cooling optimization, maximum torque is improved through combustion system optimization from 250 to 275 Nm, and the low speed turbo response is improved by 25%. By the fuel spray pattern optimization and the 35 MPa high pressure fuel system development, the engine-out particulate numbers (PN) emission is substantially reduced, and the vehicle is capable of meeting Chinese standard VI b particulate emission regulatory requirement without gasoline particulate filter (GFP).

Key words: turbocharged gasoline engine, gasoline direct injection (GDI), Miller cycle, particulate numbers (PN) emission