Vibration reducing system at key-off and method thereof
First Claim
1. A system for controlling engine shutoff at vehicle ignition key-off, the engine comprising a plurality of cylinders, the system comprising:
- an ignition module for performing ignition in the cylinders according to a predetermined ignition sequence of the cylinders;
an engine module for detecting the cylinder in which ignition currently occurs; and
an engine control module for controlling the engine to continue operating until a predetermined condition is satisfied after the key-off.
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Accused Products
Abstract
A system and method for controlling engine shutoff at vehicle ignition key-off. An ignition module performs ignition in the engine'"'"'s cylinders according to a predetermined ignition sequence. An engine module detects the cylinder in which ignition currently occurs. An engine control module controls the engine to stop operating only after a predetermined condition is satisfied after key-off. The predetermined condition may be that the cylinder in which ignition currently occurs is a preselected cylinder, such as the cylinder closest to a flywheel. The method determines whether an ignition key is turned off, detects the cylinder in which ignition currently occurs if the ignition key is turned off, determines whether the cylinder in which ignition currently occurs is a preselected cylinder, and controls the engine to stop only if the cylinder in which ignition currently occurs is the preselected cylinder. The preselected cylinder may be closest to a flywheel.
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Citations
10 Claims
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1. A system for controlling engine shutoff at vehicle ignition key-off, the engine comprising a plurality of cylinders, the system comprising:
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an ignition module for performing ignition in the cylinders according to a predetermined ignition sequence of the cylinders; an engine module for detecting the cylinder in which ignition currently occurs; and an engine control module for controlling the engine to continue operating until a predetermined condition is satisfied after the key-off. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for controlling engine shutoff at vehicle ignition key-off, the engine comprising a plurality of cylinders, the method comprising:
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determining whether an ignition key is turned off; detecting the cylinder in which ignition currently occurs if the ignition key is turned off; determining whether the cylinder in which ignition currently occurs is a preselected cylinder; and controlling the engine to stop if the cylinder in which ignition currently occurs is the preselected cylinder. - View Dependent Claims (8, 9, 10)
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Specification