| 摘要 |
A method for operating an internal combustion engine system includes, but is not limited to a combustion engine having intake manifold and exhaust manifold, a first EGR route for conveying exhaust gas from exhaust manifold to intake manifold, a second EGR route configured for conveying to the intake manifold exhaust gas having lower temperature than that conveyed through the first EGR route, and regulator for regulating the flow rate of exhaust gas through the first and the second EGR route. The method includes, but is not limited to determining a first setpoint value for the total amount of exhaust gas requested into the intake manifold, determining a second setpoint value for a parameter representative of the relationship between the total amount of exhaust gas requested into the intake manifold, the amount of exhaust gas from the first EGR route and from the second EGR route, applying said first and second set-point values to a control routine for adjusting the regulating means accordingly, determining a third setpoint value for the temperature in the intake manifold, determining the actual temperature in the intake manifold, calculating the error between said actual temperature and the third setpoint value, and using said error for generating a correction index to be applied to the second setpoint value, in order to minimize said error.
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