UAES 电喷系统在中国的应用
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©Robert Bosch GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.1
UAES发动机管理系统在国内的应用
陈江红
联合汽车电子有限公司技术中心
系统匹配部
Î减少汽车尾气排放的案例
Î提高发动机性能的技术方案
Î改善汽车燃油经济性的途径
ÎCOBD/EOBD匹配
ÎUAES EMS 匹配经验
2©Robert Bosch GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.
©Robert Bosch GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.
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•Cumulated raw emissions rise continuously
累积原始排放持续增长
•Vehicle emissions remain stagnant as soon as the Cat.Has reached its full efficiency.一旦催化器达到完全的催化效率整车排放将缓慢增长
¾Priority 重点：
Reduction of HC-raw
emissions in the first 50s.
(cold start 20 )
减小前50秒的HC 原始排放
（20
的冷机启动）C
o
C o
Vehicle speed Engine out Emission
Vehicle emissions Catalyst Light off
HC Emission within ECE test cycle
典型的车辆HC排放
减少汽车尾气排放的案例
减少汽车尾气排放的案例
降低排放的措施
ÎRaw emission改善原始排放
Î发动机自身的改进措施（PDA，VVT...）
ÎMixture Formation 混合气形成
Î电喷系统的控制策略及匹配优化
ÎCatalyst Technology催化器技术
ÎAvoid heat loss 避免热能损失
ÎCatalyst Coating 催化器涂层
ÎCatalyst with high cell density 增大催化器孔密度
4©Robert Bosch GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.
©Robert Bosch GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.
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UAES 发动机管理系统在国内的应用C
o
例:喷油策略和减小油滴直径Spray targeting and Reduce Droplet size
减少汽车尾气排放的案例
HC: 1.48 (82.2%) CO: 5.78 (39.1%)
HC: 2.028 (112%) CO: 1.674 (11.2%)Result
~ 30%Deviation
58kpa
3.8 Bar
58kpa 3.0 Bar Fuel (RVP)System Pressure HC-emission w/ and w/o
spray targeting •Start + first 25 sec •HC after pre catalyst •3.2l V6, 3V
5
10
15
20
improved mixture preparation and start calibration
0.050
[g/s]time [s]
0.1000.000
series
Optimal zone
减少汽车尾气排放的案例
改善原始排放的方案
¾可变进气流动Variable Charge Motion(VCM)
Î通过改善部分负荷工况下缸内的进气流动特性，加快此时的燃烧速率-Controlled Burn Rate(CBR)，提高燃烧稳定性，能进一步加大EGR率，
且降低HC的原始排放。
Î改善缸内的涡流或滚流特性，降低冷机部分负荷的HC排放
6©Robert Bosch GmbH reserves all rights even in the event of industrial property rights. We reserve all rights of disposal such as copying and passing on to third parties.