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Controls for hybrid vehicles

A hybrid vehicle and control device technology, applied in hybrid vehicles, power units, pneumatic power units, etc., can solve the problems of poor fuel utilization, increased engine starting vibration, insufficient driving torque, etc. Improve the utilization rate, take into account the fuel utilization rate, suppress or avoid the effect of engine starting vibration

Active Publication Date: 2017-03-08
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, in the case where the motor running torque is set by subtracting the starting torque from the upper limit torque of the electric motor, even if the motor running can actually be performed in a torque region exceeding the motor running torque, the engine is started. , fuel utilization may be worse
In particular, when a large-capacity battery (i.e., an electrical storage device that receives and receives power from and to the motor) is mounted, since the motor can continue to run for a longer period of time, the deterioration of fuel efficiency due to engine starting appears as a more significant
On the other hand, if the motor running torque is set without considering the engine start, even the amount of starting torque based on the electric motor is transferred to the running torque, the drive torque is insufficient at the time of engine start, and there is engine start shock increased likelihood

Method used

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  • Controls for hybrid vehicles
  • Controls for hybrid vehicles
  • Controls for hybrid vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] figure 1 It is a diagram illustrating a schematic configuration of a hybrid vehicle 10 (hereinafter referred to as vehicle 10 ) to which the present invention is applied, and is a block diagram illustrating main parts of a control system provided to control various parts of vehicle 10 . exist figure 1 Among them, the vehicle 10 is configured to include an engine 12 as a driving force source for traveling, a first electric motor MG1, and a second electric motor; A drive unit 18, a differential gear unit 20, a pair of left and right axle shafts 22, and the like. In addition, the vehicle 10 is provided with an oil pump 24 that is driven and rotated by the engine 12 to generate hydraulic pressure as the primary pressure of the hydraulic control circuit 54 and supply lubricating oil to the first drive unit 16 , the second drive unit 18 , and the like. Further, the vehicle 10 includes a dog clutch (dog clutch) 46 as a lockup mechanism for fixing the crankshaft 26 of the eng...

Embodiment 2

[0075] Figure 9 It is a diagram illustrating a schematic configuration of another hybrid vehicle 100 (hereinafter referred to as vehicle 100 ) to which the present invention is applied. as it should Figure 9 As shown, vehicle 100 includes planetary gear unit 102 as a differential mechanism similarly to vehicle 10 , but the connection relationship of engine 12 , first electric motor MG1 , and second electric motor MG2 with respect to planetary gear unit 102 is different from vehicle 10 . In particular, the engine 12 is indirectly connected to the first electric motor MG1 via a clutch C1, and is also connected to the same rotating element (ring gear R) of the planetary gear device 102 . A rotating element (carrier CA) of the planetary gear device 102 to which neither of the plurality of electric motors MG1 and MG2 is connected is connected to the output gear 32 as an output rotating member. The clutch C1 functions as a disconnect clutch that disconnects or connects a power t...

Embodiment 3

[0081] Figure 13 It is a diagram illustrating a schematic configuration of another hybrid vehicle 200 (hereinafter referred to as vehicle 200 ) to which the present invention is applied. as it should Figure 13 As shown, vehicle 200 includes a disconnect clutch K0 that disconnects or connects a power transmission line between engine 12 and electric motor MG, and an automatic transmission 202 that constitutes a part of the power transmission line between electric motor MG and drive wheels 14 . In the vehicle 200, such as Figure 14 As shown in the collinear diagram of , motor travel (motor travel mode) in which only the electric motor MG is used as a driving force source for travel can be realized in a state in which the disconnect clutch K0 is released. In addition, engine running (engine running mode) in which at least the engine 12 is used as a driving force source for running in a state in which the disconnect clutch K0 is engaged can be realized.

[0082] Here, a case ...

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Abstract

A control device of a hybrid vehicle includes an electric motor outputting a running torque at the time of motor running and a starting torque at engine start, in a state of the motor running using even the starting torque, the control device being configured to give a notification of the state to a driver when a charging capacity is smaller than a first predetermined value, and to start an engine when the charging capacity is smaller than a second predetermined value which is smaller than the first predetermined value.

Description

technical field [0001] The present invention relates to a control device for a hybrid vehicle including an electric motor that outputs running torque during motor running and starting torque during engine starting, and more particularly relates to setting of a motor running region in consideration of engine starting. Background technique [0002] There is known a hybrid vehicle including an electric motor that outputs running torque when the electric motor is running and starting torque when the engine is started. For example, a hybrid vehicle described in Patent Document 1 is such a vehicle. This Patent Document 1 proposes that in a hybrid vehicle including an electric motor coupled to the engine via a clutch, when the difference between the upper limit torque that the electric motor can output and the current torque generated by the electric motor, that is, the surplus torque is A plan to start the engine when the required motor torque (equivalent to the torque for starti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K6/22B60K6/445B60K6/48B60K6/54B60W10/02B60W10/06B60W10/08B60W10/10B60W20/40B60L50/16
CPCB60K6/445B60W10/06B60W10/08B60W20/40Y02T10/62Y10S903/93
Inventor 田端淳松原亨奥田弘一熊崎健太今村达也今井惠太北畑刚加藤春哉日浅康博
Owner TOYOTA JIDOSHA KK
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