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Hybrid-vehicle control device

A hybrid vehicle and control device technology, which is applied to hybrid vehicles, power devices, control devices, etc., can solve problems such as reduced driving force and reduced engine output.

Active Publication Date: 2014-07-23
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The brake priority system described in this document 1 operates when the driver performs an acceleration operation and a brake operation at the same time, and the throttle valve is reduced to reduce the engine output, thereby reducing the driving force of the vehicle.

Method used

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no. 1 Embodiment approach

[0031] Below, refer to Figure 1 to Figure 5 , the first embodiment in which the control device for a hybrid vehicle according to the present invention is embodied will be described in detail.

[0032] First, refer to figure 1 , the configuration of a hybrid system of a hybrid vehicle to which the control device of the present embodiment is applied will be described.

[0033] This hybrid system includes an engine 1 as a heat engine and two motor generators. Hereinafter, the motor generator mainly used for power generation is referred to as generator 2 , and the motor generator mainly used for generating driving force is referred to as motor 3 .

[0034] The engine 1, the generator 2, and the motor 3 are connected to a power distribution mechanism 4 including planetary gears. In addition, the power distribution mechanism 4 is also connected to the drive wheels 6 via the reduction mechanism 5 . Further, the power of the engine 1 is divided into power for driving the generato...

no. 2 Embodiment approach

[0060] Next, also refer to Image 6 with Figure 7 , a second embodiment in which the control device for a hybrid vehicle according to the present invention is embodied will be described in detail. In addition, in the present embodiment and each of the embodiments described later, the same reference numerals are assigned to the same configurations and functions as those of the above-mentioned embodiments, and detailed description thereof will be omitted.

[0061] In the first embodiment, by maintaining the engine torque when the brake priority system is activated, the deterioration of the re-acceleration performance of the hybrid vehicle after the system is released is suppressed. In the present embodiment, when the brake priority system is activated, the engine torque is increased in advance for the reacceleration performance of the hybrid vehicle after the brake priority system is released, thereby ensuring higher reacceleration performance.

[0062] In this embodiment, by...

no. 3 Embodiment approach

[0072] Next, also refer to Figure 8 with Figure 9 , a third embodiment in which the control device for a hybrid vehicle according to the present invention is embodied will be described in detail.

[0073] During the motor running of the hybrid vehicle with the engine 1 stopped, when the brake priority system is activated, if the accelerator pedal 10a is further depressed after the brake pedal 11a is released, the output of the motor 3 alone may not be able to To ensure the HVS output requested by the driver, it is necessary to start the engine 1 . In such a case, the increase in the output of the HVS delays the time required to start the engine 1, and thus the re-acceleration performance of the hybrid vehicle deteriorates. Therefore, in the present embodiment, the engine 1 is started in advance when the brake priority system is activated, thereby improving the re-acceleration performance of the hybrid vehicle after it is released.

[0074] In this embodiment, by Figure ...

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Abstract

A hybrid vehicle provided with a hybrid system that serves as the driving force thereof and has an engine and a motor, wherein: the engine torque is maintained while the output transmitted to the drive wheels is decreased by controlling the motor torque, when the accelerator and the brake pedal are simultaneously depressed (S100: Yes), causing the recovery in the driving force of the hybrid vehicle when the decrease in output is released to occur through an increase in the motor torque, which is more responsive than the engine torque.

Description

technical field [0001] The present invention relates to a control device for a hybrid vehicle, which is suitable for a hybrid vehicle having a hybrid system as a driving source, and which is used to control the driving force transmitted to the drive wheels when the driver performs an accelerator operation and a brake operation at the same time. With reduced output, this hybrid system has an engine and a motor. Background technique [0002] As a control system applied to a vehicle, there is a braking priority system disclosed in Patent Document 1. The brake priority system described in this document 1 operates when the driver performs an acceleration operation and a brake operation at the same time, and reduces the throttle valve to reduce the engine output, thereby reducing the driving force of the vehicle. Thereby, the braking of the vehicle by the brake operation is prioritized over the acceleration of the vehicle by the accelerator operation. [0003] prior art literatu...

Claims

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Application Information

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IPC IPC(8): B60W10/08B60K6/445B60W20/00
CPCB60K6/445B60W10/06B60W10/08B60W20/50B60W2540/10B60W2540/12Y02T10/62B60W20/19B60W30/18027B60L15/2072B60L2250/24Y02T10/72B60L50/15B60L50/16Y10S903/93Y02T10/64Y02T10/7072
Inventor 桥本俊哉矢口英明
Owner TOYOTA JIDOSHA KK
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