T200_T250_APPENDIX C1_GMW14116 GM 动力总成悬置设设计规范.doc

T200_T250_APPENDIX C1_GMW14116 GM 动力总成悬置设设计规范.doc

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WORLWIDE ENGINEERING STANDARDS General Specification Chassis GMW14116 Specification for 261 Powertrain Mounts Body-Frame-Integral Subsystems PAGE 1 ? Copyright 2006 General Motors Corporation All Rights Reserved October 2006 Originating Department: North American Engineering Standards Page PAGE 1of NUMPAGES 29 Table of Contents TOC \o1. Introduction 4 1.1 Scope 4 1.2 Mission/Theme 4 1.3 Classification 4 2. References 4 2.1 External Standards / Specifications 4 2.2 GM Standards / Specifications 4 2.3 Additional References 5 3. Requirements 5 3.1 System/Subsystem/Component/Part Definition 5 3.1.1 Appearance 5 3.1.2 Content 5 Physical Content 5 Functional Content 5 3.1.3 Ambient Environment 5 Temperature 5 Contaminants 6 Ozone Exposure 6 Corrosion Resistance 6 3.1.4 Interfaces 7 External-to-Vehicle to Subsystem 7 Subsystem to Powertrain 7 Subsystem to Body or Chassis Structure 7 Subsystem to others 7 3.2 Product Characteristics 8 3.2.1 Performance Requirements 8 Isolate Vibrations 8 .1 System Level Requirements 8 .1.1 Powertrain Rigid Body Modal Requirements 8 .2 Component Level Requirements 8 .2.1 Rate Characteristics 8 .2.1.1 Static Load-Deflection Curve 8 . Low Load Conditions 9 . High Load Conditions 9 . Abusive Load Conditions 9 .2.1.2 Static to Dynamic Rate Relationship Characteristics 9 .2.1.3 High Frequency Rate Dip Characteristics 9 .2.2 Dynamic Stiffness and Damping Specifications 10 .2.2.1 Mount Dynamic and Damping Rates Characterization 10 .2.3 Brackets: Interface dynamic Requirements 10 .2.3.1 Tip Mass 11 .2.3.2 Powertrain-Side Brackets 11 . Initial Design 11 . Final Design 11 .2.3.3 Chassis-Structure-Side Brackets 11 .2.3.4 Body-Structure-Side Brackets 11 .2.3.5 Bracket Resonance Measurement 11 Control Powertrain Dynamic Motion 11 .1 Maximum Displacements and Rotations 11 .2 Powertrain Retention 11 .3 Torque Steer Avoidance 12 .4 Crash Events 12 Manage Loads 12 Generic Mount Force-De

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