发明名称 |
Torque model-based cold start diagnostic systems and methods |
摘要 |
A control system for an engine having a catalytic converter includes an energy calculation module that calculates a calculated mass air flow (MAF) of intake air of the engine based on a requested torque and a requested spark timing that correspond to a desired thermal energy of exhaust of the engine, and that determines an expected thermal energy of the exhaust based on the calculated MAF, and an energy residual module that determines a thermal energy residual of the exhaust based on the expected thermal energy and an estimated thermal energy of the exhaust, wherein the estimated thermal energy is based on a measured MAF of the intake air. The control system includes an energy evaluation module that determines a diagnostic result that indicates whether the catalytic converter is operating within a target temperature range based on the thermal energy residual. Related control methods are also provided.
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申请公布号 |
US8364376(B2) |
申请公布日期 |
2013.01.29 |
申请号 |
US20090394716 |
申请日期 |
2009.02.27 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS LLC;WANG LAN;GENSLAK ROBERT J.;WANG WENBO;SQUIRE MATTHEW;PENG JINCHUN;STUTEVILLE EDWARD;MCLAIN KURT D. |
发明人 |
WANG LAN;GENSLAK ROBERT J.;WANG WENBO;SQUIRE MATTHEW;PENG JINCHUN;STUTEVILLE EDWARD;MCLAIN KURT D. |
分类号 |
G06F19/00;F01N3/00;G06G7/70 |
主分类号 |
G06F19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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