SAE J2901 Misfire Generator Functional Requirements
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Product Code:SAE J2901
Title:Misfire Generator Functional Requirements
Issuing Committee:Vehicle E E System Diagnostic Standards Committee
Scope:The intent of the specification is to present a functional set of requirements which define the user and hardware interfaceswhile providing sufficient capability to meet the misfire patterns for compliance demonstration and engineeringdevelopment. The misfire generator behaves as a spark-defeat device which induces misfires by inhibiting normal ignitioncoil discharge. It does so by monitoring the vehicle鈥檚 ignition timing signals and suspends ignition coil saturation forselected cylinder firing events. The misfire generator will thereby induce engine misfire in spark ignited gasoline internalcombustion engines; including rotary engines.This requirement assumes that the user has a fundamental understanding of misfire diagnostics as well as ignitioncontrols. This requirement is not intended to be an introductory misfire guideline or interpretation of regulatoryrequirements.
Title:Misfire Generator Functional Requirements
Issuing Committee:Vehicle E E System Diagnostic Standards Committee
Scope:The intent of the specification is to present a functional set of requirements which define the user and hardware interfaceswhile providing sufficient capability to meet the misfire patterns for compliance demonstration and engineeringdevelopment. The misfire generator behaves as a spark-defeat device which induces misfires by inhibiting normal ignitioncoil discharge. It does so by monitoring the vehicle鈥檚 ignition timing signals and suspends ignition coil saturation forselected cylinder firing events. The misfire generator will thereby induce engine misfire in spark ignited gasoline internalcombustion engines; including rotary engines.This requirement assumes that the user has a fundamental understanding of misfire diagnostics as well as ignitioncontrols. This requirement is not intended to be an introductory misfire guideline or interpretation of regulatoryrequirements.
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