COLD START SYSTEMS AND METHODS
First Claim
Patent Images
1. A cylinder deactivation system comprising:
- a fuel injection module that injects a desired amount of fuel into a cylinder of an engine during engine cranking; and
a cold start control module that maintains an intake valve and an exhaust valve associated with said cylinder in respective closed positions while said desired amount of fuel is injected when at least one of an air temperature and a coolant temperature is less than a predetermined cold start temperature.
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Abstract
A cylinder deactivation system comprises a fuel injection module and a cold start control module. The fuel injection module injects a desired amount of fuel into a cylinder of an engine during engine cranking. The cold start control module maintains an intake valve and an exhaust valve associated with the cylinder in respective closed positions while the desired amount of fuel is injected when at least one of an air temperature and a coolant temperature is less than a predetermined cold start temperature.
56 Citations
20 Claims
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1. A cylinder deactivation system comprising:
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a fuel injection module that injects a desired amount of fuel into a cylinder of an engine during engine cranking; and a cold start control module that maintains an intake valve and an exhaust valve associated with said cylinder in respective closed positions while said desired amount of fuel is injected when at least one of an air temperature and a coolant temperature is less than a predetermined cold start temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A cylinder deactivation system comprising:
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a fuel injection module that injects a desired amount of fuel into a cylinder of an engine during engine cranking; and a cold start control module that maintains an intake valve and an exhaust valve associated with said cylinder in respective closed positions while said desired amount of fuel is injected when said desired amount of fuel is greater than a predetermined maximum amount of fuel that is injectable during one cylinder cycle. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A cylinder deactivation method comprising:
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injecting a desired amount of fuel into a cylinder of an engine during engine cranking; and maintaining an intake valve and an exhaust valve associated with said cylinder in respective closed positions while said desired amount of fuel is injected when at least one of an air temperature and a coolant temperature is less than a predetermined cold start temperature. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification