Engine controller
First Claim
1. An engine controller for a vehicle equipped with an emission reduction apparatus which reduces a specified material in exhaust gas discharged from an engine, the engine controller comprising:
- an idle shutdown control means for shutting down the engine at idle when a specified condition is established;
a determination means for determining whether the emission reduction apparatus has malfunction; and
a switching means for prohibiting the idle shutdown control means from shutting down the engine when the determination means determines the emission reduction apparatus has no malfunction, and for permitting the idle shutdown control means to shut down the engine when the determination means determines the emission reduction apparatus has malfunction.
1 Assignment
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Accused Products
Abstract
An engine controller for a vehicle equipped with an emission reduction apparatus determines whether the emission reduction apparatus has malfunction. When it is determined that the emission reduction apparatus has malfunction an execution of an idle shutdown control process is permitted. When a predetermined condition is established during an engine idling, the engine is automatically shut down. On the other hand, when it is determined that the emission reduction apparatus has no malfunction, the execution of the idle shutdown control process is prohibited.
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Citations
10 Claims
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1. An engine controller for a vehicle equipped with an emission reduction apparatus which reduces a specified material in exhaust gas discharged from an engine, the engine controller comprising:
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an idle shutdown control means for shutting down the engine at idle when a specified condition is established; a determination means for determining whether the emission reduction apparatus has malfunction; and a switching means for prohibiting the idle shutdown control means from shutting down the engine when the determination means determines the emission reduction apparatus has no malfunction, and for permitting the idle shutdown control means to shut down the engine when the determination means determines the emission reduction apparatus has malfunction. - View Dependent Claims (2, 3, 4, 5)
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6. A method of controlling an engine of a vehicle equipped with an emission reduction apparatus which reduces a specified material in exhaust gas discharged from the engine, the method comprising:
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controlling a shutting down of the engine at idle when a specified condition is established; determining whether the emission reduction apparatus has malfunction; prohibiting the shutting down of the engine when said determining determines that the emission reduction apparatus has no malfunction; and permitting the shutting down of the engine when said determining determines that the emission reduction apparatus has malfunction. - View Dependent Claims (7, 8, 9, 10)
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Specification