Differential torque operation for internal combustion engine
First Claim
1. A propulsion system for a vehicle, comprising:
- an internal combustion engine including at least a first group of cylinders and a second group of cylinders;
a control system configured to operate the engine so that each firing cylinder of the first group produces a first amount of torque and each firing cylinder of the second group produces a second amount of torque different than the first amount of torque; and
wherein the control system is further configured to increase the difference between the first amount of torque and the second amount of torque with increasing engine speed.
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Accused Products
Abstract
A method of operating an internal combustion engine having a plurality of cylinders including at least a first cylinder and a second cylinder, the method comprising firing the first cylinder and the second cylinder in an alternating sequence; during a first mode, adjusting an operating parameter of the engine to produce a first difference between an amount of torque produced by the firing of the first cylinder and an amount of torque produced by the firing of the second cylinder; during a second mode, adjusting the operating parameter of the engine to produce a second difference between an amount of torque produced by the firing of the first cylinder and an amount of torque produced by the firing of the second cylinder; and performing the first mode at a higher engine speed than the second mode; wherein the first difference is greater than the second difference.
193 Citations
8 Claims
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1. A propulsion system for a vehicle, comprising:
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an internal combustion engine including at least a first group of cylinders and a second group of cylinders; a control system configured to operate the engine so that each firing cylinder of the first group produces a first amount of torque and each firing cylinder of the second group produces a second amount of torque different than the first amount of torque; and wherein the control system is further configured to increase the difference between the first amount of torque and the second amount of torque with increasing engine speed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification