5%20EML%20IIIs, BMW educational info, Dokumentacja

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//-->Table of ContentsSubjectPageEML IIIs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Objectives of the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2Purpose of the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Throttle Valve (DK) Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7Throttle Position Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10External Safety Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Basic Adaption of the PWG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13EML IIIs Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Cruise Control Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Cylinder Bank Synchronization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Fault Recognition/Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Review Questions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20EML IIIsModel: E38 - M73 EngineE31 - M73 EngineProduction Date: E38 1995 - PresentE31 1996 - End of ProductionManufacturer: SiemensPin Connector: 88 PinsObjective of the Module• jksdhfdshfkjdshfjshafkjhdsfhksdfkjsdhjfhsdjfhkjhkjsdfhkjshdkjhdsObjectives of the Module• lkdjglkjdslkjfeiouriowuetojrfdslkjflkdsjfoieutoisjdlkjf• kjkfsrdouijoekfjsdflkjeiowutoidsutiglhndkjhfdiouyhtiorueoigjlj• jckjfkdiojdslkjfvjcxkgkfhdgvhjchbkjhfkjgvhbkhcjvhdufhgkuchvjAfter completing this module, you will be able to:• hfdjfhksdfjkhdsjfhsjdhfjdshjfhsdjfhkdjhfdjfhdjfhjhdfiuyeruetyutyuryturtyurytuirytuiyruityyt• Name the Components that are Contained in the DK motors• hfjghejytiufdhkdhfjshdjfhdjhfjdhfjdhfjdhfoeuriewuooweiurieuiuiuiuiuiuiuiuiuiuoiewuro• jhjdjfhidushfiryiusdhfkjdshfkjhdsjfhsdjhfkjshdfdskjfhdsjfhjdhjfhdjhfjdhfjdhkjsytiu• jnhfkjhgkrjtikgfjdlgjlfkglfglfgfjkjjfgjjjhjrytuyreuuyueyuyuy• Explain the Stepper Motor Functions that are Monitored• List the Inputs Required for EML Operation• Decribe How the Throttle Valves are Synchronized• List What Control Modules Require a Throttle Input Signal• Understand What Type of Signal is Generated by the PWG2ST055 EML IIIsEML IIIsPurpose of the SystemThe EML IIIs is an electronic throttle control system for the M73 V-12 engine. The EML IIIswas designed and developed by Siemens to BMW specifications.The EML IIIs system uses two throttle valves and one pedal position sensor (PWG). TheEML IIIs control module regulates the position of the throttle valves based on the input fromthe pedal position sensor.In addition to throttle control, the main functions of the EML IIIs include:• Idle stabilization by regulating the throttle openings at idle.• Throttle valve positioning for optimum starting.• Synchronization of the cylinder banks.• Air volume control for ASC/DSC operation.• Cruise control regulation (the EML IIIs control module contains the GR II logic introducedon the E38 740).• Maximum road speed limitingThe operation of the EML IIIs is enhanced with additional backup (redundancy) features.This helps ensure reliable operation while maintaining a high level of operational safety.The fault memory of the EML IIIs control module is stored in anEEPROMso thatdisconnection of the battery will not erase any stored faults.The EML IIIs system is incorporated into the driving management system and is connectedto the CAN line for signal interfacing with the ECM, ASC+T and AGS control modules.3ST055 EML IIIsThe EML III system includes:• The EML IIIs control module contains two separate processors for redundant checking ofinputs and output controls.• Each throttle valve is controlled by two separate stepper motors driving one rotor• The external safety path.• E38 EML fault indication is handled by the Check Control Module, through the instrumentcluster matrix display.• The hall sensor brake pedal switch is used for the brake pedal input.• Logic monitoring of pedal/throttle valve operation4ST055 EML IIIsCOMPONENTSThe main components of the EML IIIssystem include:• The EML IIIs control module -located in the E-box.• Two throttle (DK) assemblies -mounted on each intakemanifold.• One pedal position sensor (PWG) -connected to the accelerator pedal(with a separate kick-down switch).• Electronic brake light switch.5ST055 EML IIIs [ Pobierz całość w formacie PDF ]

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