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标定
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1. 发动机标定系统
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1. 发动机标定系统
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2. 与台架通讯 --- AVL PUMA / Horiba
V1.4
V2.0
Can be measured on the acoustic test bench using a microphone.
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Structure Response Function [dB(A)]
-80 -100 -120 -140 -160 -180
Combustion Noise
(all noise components which correlate with the
cylinder pressure)
Mechanical Noise
(all noise components which do not correlate with the cylinder pressure)
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2. 汽油机爆震分析 (监控)
Evaluation methods: 5. Limit monitoring :
Trigger storage
Digital output
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3. 动力与排放平衡
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Structure Response Function
4-Cyl. 2.2l Diesel 6-Cyl. 3.2l Diesel 4-Cyl. 1.7l Diesel
Standard Struct. Resp. Function Mean Struct.Response Function
maபைடு நூலகம்ically imported into INCA
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4. 与标定软件 ATI VISION 集成
Multiple configurations may be added to the device
Can be switched at any time
Frequency [Hz]
4. NVH 噪声 Fully Anechoic Test Bench
Fully Anechoic Engine Test Stand
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4. NVH 噪声
Total Engine Noise (Air Borne Noise Level)
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2013
-
2014
Year
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3. 与标定软件 ETAS INCA 集成
During installation: Automatically detect the INCA
version installed in PC Select the version of INCA in
which the KiBox is to be used
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During measurement: the INCA icon appears
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3. 与标定软件 ETAS INCA 集成
During measurement: Parameters are auto-
Direct CN
(directly generated by the cylinder pressure attenuation)
Indirect CN
(attenuated by the cylinder pressure but generated by mechanics)
Lya 2014 KiBox Application
KiBox 燃烧分析仪应用
刘延波 Kistler Instruments
1
燃烧分析及监控系统
与曲轴转角相关的数据测量:
缸压
喷油正时
进/排气压力
喷油脉宽
温度
点火正时
喷射压力
点火脉宽
针阀升程
压力指示目的:
换气分析 发动机效率 机械负荷 燃烧稳定性 振动/振荡
发动机匹配 发动机摩擦 点火检测 燃烧噪声 排放
Heat release position: AI50 ≈ 8°CA AI50 > 8°CA, Post-combustion , Power AI50 < 8°CA, Post-combustion , Power
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4. NVH 噪声
CAV+A: Actual volume,
Indication results are transferred via INCA to testbed controller
Indication results are transferred via CAN to testbed controller
additionally
AVL IndiCom Serial Testbed Protocol via RS232 or Ethernet
爆震 残余气体 能量平衡 喷射特性 发动机功率
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热动力学分析
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1. 柴油机喷射参数优化
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2. 汽油机爆震分析 (Knock Analysis)
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2. 汽油机爆震分析 (Siemens VDO)
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2. 汽油机爆震分析 (评价)
评价方法: 1. KFRQ + KRAT : Knock Frequency + Knock Ratio 2. KPEAK : Knock Peak 3. KINT : Knock Integral 4. KPEAK_STAT : Knock Peak Statistic