奇石乐kibox 燃烧分析仪的应用.pdf

1 KiBox 燃烧分析仪应用燃烧分析仪应用 刘延波刘延波 Kistler Instruments 2 与曲轴转角相关的数据测量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 压力指示目的压力指示目的: 换气分析 发动机匹配 爆震 发动机效率 发动机摩擦 残余气体 机械负荷 点火检测 能量平衡 燃烧稳定性 燃烧噪声 喷射特性 振动/振荡 排放 发动机功率 燃烧分析及监控系统燃烧分析及监控系统 Lya 2014 KiBox Application 3 热动力学分析热动力学分析 Lya 2014 KiBox Application 1. 柴油机喷射参数优化柴油机喷射参数优化 4 Lya 2014 KiBox Application 2. 汽油机爆震分析汽油机爆震分析 (Knock Analysis) 5 Lya 2014 KiBox Application 6 2. 汽油机爆震分析汽油机爆震分析 (Siemens VDO) Lya 2014 KiBox Application 7 评价方法评价方法: 1.KFRQ + KRAT : Knock Frequency + Knock Ratio 2.KPEAK : Knock Peak 3.KINT : Knock Integral 4.KPEAK_STAT : Knock Peak Statistic 2. 汽油机爆震分析汽油机爆震分析 (评价评价) Lya 2014 KiBox Application 8 Evaluation methods: 5.Limit monitoring : Trigger storage  Digital output 2. 汽油机爆震分析汽油机爆震分析 (监控监控) Lya 2014 KiBox Application 3. 动力动力与排放平衡与排放平衡 9 Heat release position: AI50 ≈ 8° CA AI50 8° CA, Post-combustion , Power AI50 8° CA, Post-combustion , Power Lya 2014 KiBox Application 4. NVH 噪声噪声 10 CAV+A: Actual volume, Can be measured on the acoustic test bench using a microphone. Lya 2014 KiBox Application Frequency [Hz] Structure Response Function [dB(A)] Structure Response Function - 180 - 160 - 140 - 120 - 100 - 80 4 - Cyl. 2.2l Diesel 6 - Cyl. 3.2l Diesel 4 - Cyl. 1.7l Diesel Standard Struct . Resp. Function Mean Struct.Response Function Lya 2014 KiBox Application Fully Anechoic Test Bench Fully Anechoic Engine Test StandFully Anechoic Engine Test StandFully Anechoic Engine Test StandFully Anechoic Engine Test Stand 4. NVH 噪声噪声 Lya 2014 KiBox Application 4. NVH 噪声噪声 13 Total Engine Noise (Air Borne Noise Level) Direct CN (directly generated by the cylinder pressure attenuation) Indirect CN (attenuated by the cylinder pressure but generated by mechanics) Combustion Noise (all noise components which correlate with the cylinder pressure) Mechanical Noise (all noise components which do not correlate with the cylinder pressure) Lya 2014 KiBox Application 14 标标 定定 Lya 2014 KiBox Application 15 1. 发动机标定系统发动机标定系统 Lya 2014 KiBox Application 16 1. 发动机标定系统发动机标定系统 Lya 2014 KiBox Application V1.4 Indication results are transferred via INCA to testbed controller Indication results are transferred via CAN to testbed controller V2.0 AVL IndiCom Serial Testbed Protocol via RS232 or Ethernet Year 2013 - 2014 17 additionally 2. 与台架通讯与台架通讯 --- AVL PUMA / Horiba Lya 2014 KiBox Application 18 3. 与标定软件与标定软件 ETAS INCA 集成集成 During installation:  Automatically detect the INCA version installed in PC  Select the version of INCA in which the KiBox is to be used During measurement:  the INCA icon appears Lya 2014 KiBox Application 19 3. 与标定软件与标定软件 ETAS INCA 集成集成 During measurement:  Parameters are auto- matically imported into INCA Lya 2014 KiBox Application 20 4. 与标定软件与标定软件 ATI VISION 集成集成  Multiple configurations may be added to the device  Can be switched at any time  useful for in- vehicle testing Lya 2014 KiBox Application 21 4. 与标定软件与标定软件 ATI VISION 集成集成  Offline Analysis Lya 2014 KiBox Application 22 5. 汽油机标定汽油机标定 主要关注参数主要关注参数  KPeak : Knock Peak  AI50 : Location of 50% burnt mass fraction  IMEP_cov : Variant coefficient over a certain number of cycles Lya 2014 KiBox Application 23 5. 汽油机标定汽油机标定 主要关注参数主要关注参数 Lya 2014 KiBox Application 24 6. 柴油机标定柴油机标定 主要关注参数主要关注参数  AI50  RMAX : Maximum rise per degree crank angle  ARMAX : Crank angle location of RMAX Lya 2014 KiBox Application 25 7. 应用举例：应用举例： 换挡扭矩控制换挡扭矩控制 Lya 2014 KiBox Application 26 Trouble-shooting Lya 2014 KiBox Application 27 1. Misfire 失火分析失火分析 0 10 20 30 40 50 60 70 80 90 100 050100150200250300 PMAX1 bar PMAX2 bar PMAX3 bar PMAX4 bar Evaluation parameter:  PMAX Lya 2014 KiBox Application 28 1. Misfire 失火分析失火分析 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 050100150200250300 IMEP1 bar IMEP2 bar IMEP3 bar IMEP4 barEvaluation parameter:  IMEP Lya 2014 KiBox Application 29 1. Misfire 失火分析失火分析 Evaluation parameter:  PMAX  IMEP  Mis-fire  Normal Lya 2014 KiBox Application 30 2. PMAX 过大的危害分析过大的危害分析 发动机的运动部件，尤其活塞连杆机构，在每个循环发动机的运动部件，尤其活塞连杆机构，在每个循环 都承受很大的负荷都承受很大的负荷 当缸内燃烧压力峰值过大时，会导致一些零部件因负当缸内燃烧压力峰值过大时，会导致一些零部件因负 载太大而损坏载太大而损坏 例如：活塞环会因为负载太例如：活塞环会因为负载太大而断裂大而断裂，导致拉缸。

导致拉缸 严重严重的甚至导致整台发动机报废的甚至导致整台发动机报废 Lya 2014 KiBox Application 31 监监 控控 Lya 2014 KiBox Application 32 1. Limit monitoring — Data stored automatically Data stored automatically when the specified condition is triggered Lya 2014 KiBox Application 33 2. Limit monitoring — Digital output Digital signal can also be imported to a 3-rd device in the test bench : e.g. Emergency stop Lya 2014 KiBox Application 34 3. CAN Monitoring  Configure CAN database Lya 2014 KiBox Application 35 3. CAN Monitoring  KiBox CAN data displayed in a device accepts CAN data Lya 2014 KiBox Application 。