STT起停系统工作原理

1、General principles of operation 一般工作原理一般工作原理In this part, we will remind what was briefly presented during module 01 - ”introduction to Stop & Start systems”这个部分，我们将简短地回顾模块一的内容 “起停系统介绍”“The main principle of the Stop & Start function is to stop the thermal engine when idling at low vehicle speed, an

2、d restart it when needed by the driver”“起停功能的主要原理是：当车辆低速空载时，使热能发动机停止运行；当驾驶员需要时，重启发动机”1General principles of operationBasically, the Stop & Start function will STOP and RESTART the engineSTOP the engine = cut the injection and ignition in order to stall the engineRESTART the engine = activate the sta

3、rter, synchronize, inject and igniteHowever, the Stop & Start function must take into consideration lots of constrains !SafetyDrivers comfort and requestsTechnical limits of componentsEnergy managementExamplesA/C produces fresh air with a compressor driven by the engine. The driver sets the A/C to 2

4、2C, if the cabin temperature raises too much, the Stop & Start function will have to restart the engineThe DMTR stabilizes the voltage on the electric network. After too many stabilizations, the DMTR will have to cool down : no STOP allowed for a little time.2一般工作原理一般工作原理从根本上来说，起停功能就是停止和重启发动机停止发动机 =

5、 停止喷注和点火，以便使发动机熄火重启发动机 = 激活起动机，与此同时，喷注和点火然而，起停功能必须考虑多方面的限制因素 !安全驾驶员的舒适性和要求组件的技术限制能源管理例如空调产生的冷空气是通过发动机驱动空调压缩机完成的。驾驶员将空调设置为22C, 如果座舱内温度上升太多，STT功能将不得不重启发动机DMTR会稳定电子网络上的电压。多次稳定之后，DMTR将不得不冷却下来：短时间内不允许停止3General principles of operationHow does STT work ?To enter the STOP mode4A request from the driver(int

6、erpreted by the system according to the drivers action)The authorization of all the systems of the vehicle(powertrain, chassis, energy, cabin)&STOP一般工作原理一般工作原理STT系统是如何工作的？系统是如何工作的？进入停止模式5驾驶员的要求驾驶员的要求(根据驾驶员的操作，系统的识别)整车所有系统的认可整车所有系统的认可(动力总成, 底盘, 能源, 座舱)&停止停止General principles of operationHow does STT

7、work ?To RESTART the engine6The authorization of all the systems of the vehicle(powertrain, chassis, energy, cabin)A request from the driver(interpreted by the system according to the drivers action)A request from one of the systems(powertrain, chassis, energy, cabin)&RESTARTDriver RESTARTAutomatic

8、RESTARTvs!一般工作原理一般工作原理STT系统是如何工作的系统是如何工作的 ?重启发动机7整车所有系统的认可整车所有系统的认可(动力总成, 底盘, 能源, 座舱)驾驶员的要求驾驶员的要求(根据驾驶员的操作，系统的识别其中一个系统的请求其中一个系统的请求(动力总成, 底盘, 能源, 座舱)&重启重启驾驶员重启自动重启vs!General principles of operation一般运行原理一般运行原理Reminder : functional architecture 功能架构功能架构8EngineMonitoring 发动机监控EEMonitoringEE监控VehicleMon

9、itoring整车监控DriverMonitoring驾驶员监控GearboxMonitoring变速箱监控Stop coordination停止协调Restart coordination重启协调Cut coordination切断协调Functional diagnosis功能诊断Stop & Start supervisor起停监控器Engine management发动机管理Driver management驾驶员管理EE components managementEE零件管理Validated requests验证请求Authorizations and interdictions授

10、权和禁止Powertrain state动力总成状态MONITOR 监控监控SYNTHETIZE 综合综合ACT 行动行动STOP & STARTGeneral principles of operation一般运行原理一般运行原理Reminder : functional architecture 功能架构功能架构9DAGMP+Manages in detail the starter activation and engine cut off详细管理起动机的激活详细管理起动机的激活和发动机的切断功能和发动机的切断功能This function is present even without

11、 STT此功能在无STT的情况下也存在SCAHelps the driver to recover from a stall during a RESTART by launching another RESTART as soon as possible 通过尽快进行另一次重启，通过尽快进行另一次重启，帮助驾驶员从重启模式中的熄火状态中恢复帮助驾驶员从重启模式中的熄火状态中恢复过来。过来。This function is an extra of the STT function此功能是STT的额外功能General principles of operation一般运行原理一般运行原理Reminder : electronic architecture 电气架构电气架构10CMMBSIBICD(Clutch position sensor if BVM若为BVM，离合器位置传感器)(Neutral position sensor if BVM若为BVM，空挡位置传感器)Mastervac sensor真空助力传感器DMTRESPGEP DAAT6IIICLIMFMUXCMBBECBALTStop & Start supervisor起停监控器Stabilize voltage稳定电压Open the powertrain开启动力总成Display 显