vehicle control device

A control device and vehicle technology, which can be applied to control devices, road vehicle drive control systems, power devices, etc., and can solve problems such as poor dynamic performance.

Active Publication Date: 2022-01-11
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, when the rotation characteristics fluctuate due to individual differences of the rotation members, changes over time, etc., in the control based on the predetermined rotation characteristics, the desired effect cannot be obtained, and there is a possibility that the dynamic performance, NV [Noise (noise), Vibration (vibration)] performance deterioration

Method used

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Examples

Experimental program
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Embodiment Construction

[0050] The engine is an internal combustion engine that generates power by burning fuel, such as a gasoline engine or a diesel engine. As the electric motor, it is preferable to use a motor generator that can also function as a generator. A rotating member having rotational characteristics with respect to input torque is, for example, a damper device that absorbs rotational vibration of an engine, a power transmission shaft having predetermined torsional rigidity, and the like. The vibration damper is configured, for example, to include an elastic body such as a spring and a friction mechanism, but may include only any one of them. As the rotational characteristic of the rotating member with respect to the input torque, there is a rigidity value corresponding to the ratio of a change in the input torque to a change in the torsion angle, the hysteresis being an increase in the torsion angle, etc. The gap size is the change amount of the torsion angle when the input torque is p...

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Abstract

The present invention is a vehicle control device capable of appropriately performing control based on the rotation characteristics regardless of fluctuations in the rotation characteristics due to individual differences in rotation members. In the state where the rotation of the crankshaft (24) is locked by the engaging brake (36), torque (Tin) is applied to the damper device (rotation member) (26) by the power running control of the first motor generator (MG1) ) and measure the torsion angle (Φ) to detect rotational characteristics such as rigidity, and set various control values ​​related to the engine rotational speed (Ne) based on the detected rotational characteristics (for example, when the engine starts crankshaft rotation completion determination value, idle rotation speed during idle rotation control, etc.), therefore, regardless of fluctuations in rotation characteristics caused by individual differences in the vibration damping device (26), or changes over time, it can be based on the actual rotation speed. The characteristic appropriately performs various controls associated with the engine rotational speed (Ne).

Description

technical field [0001] The present invention relates to a control device for a vehicle, and more particularly to an improvement of a control device for a vehicle which utilizes the rotational characteristics of a rotating member such as a vibration damper in the control of a vehicle. Background technique [0002] There is known a vehicle including an engine, an electric motor, and a rotating member provided between the engine and the electric motor and having a rotating characteristic related to input torque. The rotating member is, for example, a vibration damper that absorbs the rotational vibration of the engine, a power transmission shaft with a predetermined rigidity, etc., and its rotational characteristics include rigidity value, hysteresis, gap size (Japanese: Gata-inch method), etc., and the rigidity value is equivalent to the input The ratio of the change in torque to the change in torsion angle, the hysteresis is the difference between the input torque when the to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/06B60W20/00
CPCB60W10/06B60W20/00B60K6/445B60K2006/381B60K6/387B60K2006/268B60W10/02B60W10/08B60W20/15B60W2050/0088B60W50/0098Y02T10/62B60W20/10B60K6/26B60W2710/0666B60W2710/083B60Y2300/192B60K6/46B60W2710/0644B60K6/40B60Y2200/92B60W2400/00
Inventor 西田鹰之后藤田研二桑本祐纪武内智哉原田佑公中田明宫坂贤治
Owner TOYOTA JIDOSHA KK
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