MULTICYLINDER ENGINE AND METHOD FOR CONTROLLING THE SAME
First Claim
1. A multicylinder engine in which part of cylinders may be deactivated, comprising:
- a control unit that controls multiple operating cylinders to smooth output torque of the operating cylinders when ignition takes place in the operating cylinders at uneven intervals during cylinder deactivation.
1 Assignment
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Accused Products
Abstract
In some cylinder deactivation modes (e.g. virtual V-four operation mode in which two cylinders of a V-six engine are deactivated), ignition/combustion may take place in operating cylinders at uneven intervals. In this case, the output torque varies between the immediately subsequent operating cylinders after the deactivated cylinders in the firing order and the other operating cylinders. A multicylinder engine includes an ignition timing adjustment unit. When the ignition takes place in the operating cylinders at uneven intervals during cylinder deactivation, the ignition timing adjustment unit adjusts ignition timing in each of the operating cylinders to smooth the output torque of the operating cylinders.
61 Citations
16 Claims
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1. A multicylinder engine in which part of cylinders may be deactivated, comprising:
a control unit that controls multiple operating cylinders to smooth output torque of the operating cylinders when ignition takes place in the operating cylinders at uneven intervals during cylinder deactivation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for controlling a multicylinder engine in which part of cylinders may be deactivated, comprising:
controlling multiple operating cylinders to smooth output torque of the operating cylinders when ignition takes place in the operating cylinders at uneven intervals during cylinder deactivation. - View Dependent Claims (11, 12, 13, 14, 15, 16)
Specification