System and method for controlling fuel injection when an engine is automatically started to decrease an engine startup period
First Claim
Patent Images
1. A system comprising:
- a stop-start module that stops an engine and thereby interrupts a compression stroke of a cylinder in the engine when a driver depresses a brake pedal while an ignition system is on and the engine is idling, and that restarts the engine when the driver releases the brake pedal;
a fuel control module that, when the engine is restarted, selectively injects fuel into the cylinder as the cylinder completes the interrupted compression stroke based on an amount of crankshaft rotation corresponding to a difference between a position of a piston in the cylinder when the piston is stopped and top dead center; and
a spark control module that, when the engine is restarted, selectively generates spark in the cylinder as the cylinder completes the interrupted compression stroke based on the amount of crankshaft rotation.
3 Assignments
0 Petitions
Accused Products
Abstract
A system according to the principles of the present disclosure includes a stop-start module and a fuel control module. The stop-start module stops an engine and thereby interrupts an engine cycle when a driver depresses a brake pedal while an ignition system is on and the engine is idling. The stop-start module restarts the engine when the driver releases the brake pedal. The fuel control module, when the engine is restarted, selectively injects fuel into a cylinder of the engine as the cylinder completes the interrupted engine cycle based on an amount of crankshaft rotation corresponding to a difference between a position of a piston in the cylinder when the piston is stopped and top dead center.
-
Citations
20 Claims
-
1. A system comprising:
-
a stop-start module that stops an engine and thereby interrupts a compression stroke of a cylinder in the engine when a driver depresses a brake pedal while an ignition system is on and the engine is idling, and that restarts the engine when the driver releases the brake pedal; a fuel control module that, when the engine is restarted, selectively injects fuel into the cylinder as the cylinder completes the interrupted compression stroke based on an amount of crankshaft rotation corresponding to a difference between a position of a piston in the cylinder when the piston is stopped and top dead center; and a spark control module that, when the engine is restarted, selectively generates spark in the cylinder as the cylinder completes the interrupted compression stroke based on the amount of crankshaft rotation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 19)
-
-
10. A method comprising:
-
stopping an engine and thereby interrupting a compression stroke of a cylinder in the engine when a driver depresses a brake pedal while an ignition system is on and the engine is idling; restarting the engine when the driver releases the brake pedal; when the engine is restarted, selectively injecting fuel into the cylinder as the cylinder completes the interrupted compression stroke based on an amount of crankshaft rotation corresponding to a difference between a position of a piston in the cylinder when the piston is stopped and top dead center; and when the engine is restarted, selectively generating spark in the cylinder as the cylinder completes the interrupted compression stroke based on the amount of crankshaft rotation. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 20)
-
Specification