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Vehicle control device

A technology for control devices and vehicles, applied in the direction of control devices, electrical devices, power devices, etc.

Active Publication Date: 2019-07-23
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are cases where dynamic performance, vibration, noise, etc. are affected by the rotation characteristics of such a rotating member

Method used

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Experimental program
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Embodiment Construction

[0050] The engine is an internal combustion engine that generates power by combustion of fuel, such as a gasoline engine or a diesel engine, and rotational vibration is generated by knocking or the like, and the rotational vibration may be amplified by resonance of a torsionally rigid rotating member such as a vibration damper. 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 to include, for example, an elastic body such as a spring and a friction mechanism, but may only include an elastic body. As the rotation characteristics of the rotating member with respect to the input torque, there are the rigidity value of the torsional rigidity correspondin...

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Abstract

The present invention relates to a vehicle control device capable of obtaining an engine rotational speed signal in which a vibration component having a resonance frequency determined on the basis ofthe torsional rigidity of a rotating member is appropriately reduced regardless of fluctuations in the torsional rigidity caused by individual differences in the rotating member or the like. The actual resonant frequency (fr) is calculated by applying a torque (Tin) to a vibration damping device (a rotating member) and measuring a torsional angle (phi), detecting torsional rigidity (a rigidity value (K1) or the like). Then, the vibration component of the actual resonant frequency (fr) in the engine rotation speed signal (SNe) provided by the engine rotation speed sensor is attenuated, and theengine rotation driving control, misfire determination, abnormal sound determination, and the like are performed by using the engine rotation speed signal (SNe). The vibration component of the enginerotation speed signal (SNe) is appropriately reduced on the basis of the actual resonance frequency (fr) regardless of fluctuations in torsional rigidity caused by individual differences in the damping device or the like. Thus, it is possible to appropriately control the engine rotation speed signal (SNe) used later.

Description

technical field [0001] The present invention relates to a control device for a vehicle, and in particular, to an improvement of a control device for a vehicle that performs various controls in consideration of the rotation characteristics of a rotating member such as a vibration damper. 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 are rigidity value (torsional rigidity), hysteresis, gap size, etc., and the rigidity value corresponds to the input torque The ratio of the change to the change of the torsion angle, the hysteresis is the difference between the input torque when the torsion angl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/08B60W20/00B60W40/00
CPCB60W10/06B60W10/08B60W20/00B60W40/00G01M15/046G01M15/11B60W2030/206B60W2050/0057B60W2050/0052B60W20/17B60W2510/0638B60W2710/081B60Y2200/92B60L2270/145B60L2220/42B60L2220/46B60L50/16B60K6/445B60W20/15Y02T10/62Y02T10/64Y02T10/72Y02T10/7072B60W50/00G05D16/02
Inventor 菰田隆裕后藤田研二桑本祐纪
Owner TOYOTA JIDOSHA KK
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