Drive force control system for vehicles
AssigneeNissan Motor Co., Ltd.
InventorMasaaki Uchida
Life of this patent
Estimating the term…
Abstract
A controller 41 controls the torque of a front wheel drive motor 22 and a rear wheel drive motor 23, the rotation speed of a generator 21, and the torque of an engine 1. The controller 41 computes a target drive force tFv of a vehicle based on an accelerator pedal depression amount APS and a vehicle speed VSP, and divides this tFv into a target drive force tFf for the front wheels, and a target drive force tFr for the rear wheels. A power tPg required to drive the generator 21 is computed based on the target vehicle drive force tFv, and a target rotation speed tNg of the generator is computed based on this and the vehicle speed VSP. A target torque of the engine is computed from tNg and tPg.
Claims10
A drive force control system for vehicles, comprising:
- an engine,
- a generator connected to the engine,
- a front wheel drive motor and rear wheel drive motor which are supplied power from the generator, and
- a microprocessor programmed to:
- compute a target drive force of the vehicle based on an accelerator depression amount and vehicle speed,
- compute a target front wheel drive force and a target rear wheel drive force by dividing the target vehicle drive force,
- compute a power required to drive the generator based on the target vehicle drive force,
- compute the target rotation speed of the generator based on the power required to drive the generator and vehicle speed,
- compute a target torque of the engine based on the power required to drive the generator and rotation speed of the generator,
- control the front wheel drive motor and rear wheel drive motor based on the target front wheel drive force and target rear wheel drive force, and
- control the engine and generator based on the target engine torque and target generator rotation speed.
A drive force control system for vehicles, comprising:
- an engine,
- a generator connected to the engine,
- a front wheel drive motor and rear wheel drive motor which are supplied power from the generator,
- means for computing a target drive force of the vehicle based on an accelerator depression amount and vehicle speed,
- means for computing a target front wheel drive force and a target rear wheel drive force by dividing the target vehicle drive force,
- means for computing a power required to drive the generator based on the target vehicle drive force,
- means for computing the target rotation speed of the generator based on the power required to drive the generator and vehicle speed,
- means for computing a target torque of the engine based on the power required to drive the generator and rotation speed of the generator,
- means for controlling the front wheel drive motor and rear wheel drive motor based on the target front wheel drive force and target rear wheel drive force, and
- means for controlling the engine and generator based on the target engine torque and target generator rotation speed.
Dependencies are inferred from the claim text.