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US 7,467,678 B2Granted
Hybrid four-wheel-drive
AssigneeNissan Motor Co., Ltd.
InventorsDaiki Tanaka, Jun Sugihara
Life of this patent
Estimating the term…
Abstract
A four-wheel drive system for a hybrid vehicle includes at least two motor-generators and a single engine connected to a differential having multiple degrees of freedom. In some embodiments, by adjusting the outputs of the motor-generators, a controller allocates power from the engine, to or from each of the motor-generators, to the front wheels and to the rear wheels, each of which is connected to an element of the differential. The relationship between the elements of the differential is represented by an alignment chart of the differential.
Claims23
A drivetrain for a vehicle comprising:
- a first driveline system including one of front wheels or rear wheels;
- a second driveline system including the other of the front wheels and the rear wheels;
- a differential gear mechanism including rotational elements having
- a first rotational element configured to receive power from an engine and directly output the power from the engine to the first driveline system,
- a second rotational element configured to input power from a first motor-generator, and
- a third rotational element configured to input power from a second motor-generator, one of the rotational elements of the differential gear mechanism other than the first rotational element being configured to output power to the second driveline system;
- and
- a controller configured to adjust power outputs to the first driveline system and the second driveline system.
5 more elements
Dependencies are inferred from the claim text.