Control system for cylinder cut-off internal combustion engine
First Claim
1. A system for controlling an internal combustion engine having a plurality of cylinders and mounted on a vehicle, comprising:
- an engine operation controller that conducts a switching control of engine operation based on a load of the engine between a full-cylinder operation in which all of the cylinders are operative and a cut-off cylinder operation in which some of the cylinders are inoperative, wherein the engine operative controller outputs a first signal indicating a state of the switching control;
a running controller that conducts a running control including at least one of a cruise control in which the vehicle runs at a desired vehicle velocity and a preceding vehicle follow-up control in which the vehicle runs at a desired vehicle velocity to maintain a desired inter-vehicle distance from a preceding vehicle, wherein the running controller outputs a second signal indicating the state of a running control; and
an acceleration suppression controller that receives the first and second signals, and conducts an acceleration suppression control if the first signal indicates that the engine operation is switched from the cut-off cylinder operation to the full-cylinder operation and the second signal indicates that the running control is in progress.
2 Assignments
0 Petitions
Accused Products
Abstract
In a control system for an internal combustion engine having a plurality of cylinders and mounted on a vehicle, in which the engine operation is switched based on the throttle opening between a full-cylinder operation in which all of the cylinders are operative and a cut-off cylinder operation in which some of the cylinders are inoperative, and a running control including a cruise control in which the vehicle runs at a desired vehicle velocity and a preceding vehicle follow-up control in which the vehicle runs at a desired vehicle velocity to maintain a desired inter-vehicle distance from a preceding vehicle are conducted. In the system, an acceleration suppression control is conducted if the engine operation is switched from the cut-off cylinder operation to the full-cylinder operation when the running control is in progress. With this, sharp or drastic acceleration accompanying torque fluctuation is effectively avoided, when the engine operation is switched to the full-cylinder operation.
36 Citations
19 Claims
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1. A system for controlling an internal combustion engine having a plurality of cylinders and mounted on a vehicle, comprising:
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an engine operation controller that conducts a switching control of engine operation based on a load of the engine between a full-cylinder operation in which all of the cylinders are operative and a cut-off cylinder operation in which some of the cylinders are inoperative, wherein the engine operative controller outputs a first signal indicating a state of the switching control; a running controller that conducts a running control including at least one of a cruise control in which the vehicle runs at a desired vehicle velocity and a preceding vehicle follow-up control in which the vehicle runs at a desired vehicle velocity to maintain a desired inter-vehicle distance from a preceding vehicle, wherein the running controller outputs a second signal indicating the state of a running control; and an acceleration suppression controller that receives the first and second signals, and conducts an acceleration suppression control if the first signal indicates that the engine operation is switched from the cut-off cylinder operation to the full-cylinder operation and the second signal indicates that the running control is in progress. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification