失火发生器功能要求

[中文适用范围]： 该规范的目的是提出一组功能要求，定义用户和硬件接口，同时提供足够的功能来满足合规性演示和工程开发的失火模式。在整个要求中@任何对“点火或喷油器控制信号”的引用？可互换地使用来推断受影响的火花点火发动机的点火控制信号或压缩点火发动机的喷射器控制信号被定时定相中断或直接被失火发生器传递。对于火花点火发动机，失火发生器充当火花抑制装置，通过抑制正常的点火线圈放电而引起失火。它通过监控车辆的点火正时信号并暂停选定气缸点火事件的点火线圈饱和来实现这一点。因此，失火发生器将在火花点火式汽油内燃机中引起发动机失火；包括转子发动机。对于压燃式发动机@，失火发生器充当燃油喷射失效装置，通过抑制正常的燃油喷射脉冲来引起失火。它通过监控喷射脉冲信号并暂停选定气缸点火事件的喷射脉冲来实现这一点。失火发生器将由此导致压燃式发动机中的发动机失火。此要求假设用户对失火诊断和点火控制有基本的了解。该要求并非旨在作为介绍性失火指南或对监管要求的解释。目的 本文件旨在定义失火发电机的标准，该发电机将用于需要检测并向监管机构报告失火的车辆。 [外文原描述]： The intent of the specification is to present a functional set of requirements which define the user and hardware interfaces while providing sufficient capability to meet the misfire patterns for compliance demonstration and engineering development. Throughout this requirement, any reference to “ignition or injector control signal” is used interchangeably to infer that the effected spark ignition engine’s ignition control signal or the compression ignition engine’s injector control signal is interrupted, timing phased, or directly passed by the misfire generator.For spark ignition engines, the misfire generator behaves as a spark-defeat device which induces misfires by inhibiting normal ignition coil discharge. It does so by monitoring the vehicle’s ignition timing signals and suspends ignition coil saturation for selected cylinder firing events. The misfire generator will thereby induce engine misfire in spark ignited gasoline internal combustion engines; including rotary engines.For compression ignition engines, the misfire generator behaves as a fuel injection-defeat device which induces misfire by inhibiting the normal fuel injection pulses. It does so by monitoring the injection pulses signal and suspending the injection pulses for selected cylinder firing events. The misfire generator will thereby induce engine misfire in compression ignition engines.This requirement assumes that the user has a fundamental understanding of misfire diagnostics as well as ignition controls. This requirement is not intended to be an introductory misfire guideline or interpretation of regulatory requirements.Cross Reference: J1930_201703