发明名称 |
Method of Improving Emissions an IC Engine. |
摘要 |
A method for controlling a throttle valve 10 and an EGR valve 16 in internal combustion engine. The method comprises the steps of measuring an actual fresh mass air flow value 1 entering the engine; determining an exhaust oxygen concentration setpoint [02]spEM indicative of the oxygen concentration in the exhaust manifold; calculating an air reference value Airreference as a function of said exhaust oxygen concentration setpoint [02]spEm; determining an oxygen concentration feedback value [ 0 2] fdIM, [02]fdEM representative of the oxygen concentration in the engine; obtaining position information for the throttle valve by comparing the actual fresh mass air flow value and air reference value; obtaining position information for the EGR valve by comparing the oxygen concentration feedback value and the oxygen concentration setpoint; and controlling the throttle valve and the EGR valve according to the respectively corresponding position information. Additionally, a turbocharger 1b may be disposed in the intake manifold and pressure control inside the intake manifold is controlled based on boost pressure. |
申请公布号 |
GB2460053(A) |
申请公布日期 |
2009.11.18 |
申请号 |
GB20080008719 |
申请日期 |
2008.05.14 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS, INC. |
发明人 |
MASSIMILIANO MAIRA;NANDO VENNETTILLI |
分类号 |
F02D41/00;F02D41/18;F02D43/00 |
主分类号 |
F02D41/00 |
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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