Method for operating a hybrid vehicle and hybrid vehicle
First Claim
1. A method for operating a hybrid vehicle having a multi-cylinder internal combustion engine which is coupled to an electric machine, the internal combustion engine having at least one cylinder which can be switched off, wherein of a total momentum provided by the vehicle a first partial momentum is provided by the internal combustion engine and a second partial momentum is provided by the electric machine, the method comprising the step of:
- when one or several cylinders is/are switched off, utilizing the second partial momentum in a controlled manner to damp cyclic irregularities of the internal combustion engine, wherein at least one of a magnitude and phase of the damping is determined on the basis of fuel consumption and a vehicle driving comfort parameter.
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Accused Products
Abstract
In a method for operating a hybrid vehicle with an electric motor coupled with a multi-cylinder internal combustion engine having at least one cylinder that can be switched off, with a first partial momentum, from an overall momentum provided to the vehicle, being provided by the internal combustion engine and a second partial momentum from the electric motor, and the second partial momentum is used specifically for dampening a cyclic irregularity of the internal combustion engine. Further, means are provided in a hybrid vehicle control, by which the second partial momentum can be used specifically to dampen the cyclic irregularity of the internal combustion engine when one or, if necessary, several cylinders are switched off.
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Citations
19 Claims
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1. A method for operating a hybrid vehicle having a multi-cylinder internal combustion engine which is coupled to an electric machine, the internal combustion engine having at least one cylinder which can be switched off, wherein of a total momentum provided by the vehicle a first partial momentum is provided by the internal combustion engine and a second partial momentum is provided by the electric machine, the method comprising the step of:
when one or several cylinders is/are switched off, utilizing the second partial momentum in a controlled manner to damp cyclic irregularities of the internal combustion engine, wherein at least one of a magnitude and phase of the damping is determined on the basis of fuel consumption and a vehicle driving comfort parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A hybrid vehicle comprising:
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an electric motor coupled to a multi-cylinder internal combustion engine, having at least one cylinder that can be switched off, wherein a first partial momentum, from the entire momentum provided to the vehicle, being provided by the internal combustion engine and a second partial momentum by the electric motor, and control means, operable to control the second partial momentum such that when one or several cylinders is/are switched off, the second partial momentum is used in a controlled manner to damp cyclic irregularities of the internal combustion engine, wherein the control means are further operable to determine at least one of a magnitude and phase of the damping on the basis of fuel consumption and a vehicle driving comfort parameter. - View Dependent Claims (14, 15, 16)
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17. A method for operating a hybrid vehicle with an electric motor coupled to a multi-cylinder internal combustion engine, having at least one cylinder that can be switched off, with a first partial momentum, of a total momentum provided to the vehicle, being provided by the internal combustion engine and a second partial momentum by the electric motor, the method comprising the steps of:
dampening cyclic irregularities of the internal combustion engine using the electric motor when one or several cylinders are switched off, wherein a measurement of the cyclic irregularity is determined for said dampening of the cyclic irregularity and depending on said measurement a dampening counter momentum is applied onto the internal combustion engine via the electric motor; and
wherein at least one of a magnitude and phase of the damping is determined on the basis of fuel consumption and a vehicle driving comfort parameter.- View Dependent Claims (18, 19)
Specification