Automotive catalyst excess oxygen reduction system
First Claim
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1. An excess oxygen reduction system, comprising:
- a fuel cut-off condition module that determines whether a fuel cut-off condition exists;
an injector module that prevents a fuel injector from fueling a cylinder when said fuel cut-off condition exists; and
a valve module that closes an impulse charging valve when said fuel cut-off condition exists.
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Abstract
An excess oxygen reduction system includes a fuel cut-off condition module, an injector module, and a valve module. The fuel cut-off condition module determines whether a fuel cut-off condition exists. The injector module prevents a fuel injector from fueling a cylinder when said fuel cut-off condition exists. The valve module closes an impulse charging valve when said fuel cut-off condition exists.
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Citations
15 Claims
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1. An excess oxygen reduction system, comprising:
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a fuel cut-off condition module that determines whether a fuel cut-off condition exists; an injector module that prevents a fuel injector from fueling a cylinder when said fuel cut-off condition exists; and a valve module that closes an impulse charging valve when said fuel cut-off condition exists. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method to reduce excess oxygen in a catalytic converter, comprising:
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determining whether a fuel cut-off condition exists; preventing a fuel injector from fueling a cylinder when said fuel cut-off condition exists; and preventing excess oxygen flow to the catalytic converter by closing an impulse charging valve when said fuel cut-off condition exists. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification