Power output apparatus, vehicle provided with the same, and method of controlling the same
A power output and control device technology, which is applied to the layout of multiple different prime movers and power devices of hybrid vehicles and general power devices, can solve problems such as torque limitation and drive shaft torque reduction, and achieve suppression Effect of Torque Shock
Inactive Publication Date: 2009-01-14
TOYOTA JIDOSHA KK
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Problems solved by technology
When this control is performed, since the torque that can be output from the second electric motor decreases as the rotational speed of the second electric motor increases, although a large torque is output from the second electric motor when the vehicle stops or runs at a low speed, the According to the output limitation, as the vehicle speed increases thereafter, the torque output from the second electric motor starts to be limited, and the torque output to the drive shaft decreases
Method used
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[0034] Exemplary embodiments for realizing the present invention will be described below.
[0035] FIG. 1 is a configuration diagram showing an outline of the configuration of a hybrid vehicle 20 on which a power output apparatus as an embodiment of the present invention is mounted. As shown in FIG. 1 , the hybrid vehicle 20 of the present embodiment includes: an engine 22; a three-shaft type power distribution / integration mechanism 30 connected to a crankshaft 26 as an output shaft of the engine 22, and a shock absorber 28 disposed thereon Between the two; the electric motor MG1 capable of generating electric power, which is connected to the power distribution / integration mechanism 30; the reduction gear 35, which is mounted to the ring gear shaft 32a as a drive shaft, and the ring gear shaft 32a is connected to the power distribution / integration mechanism 30 the electric motor MG2, which is connected to the reduction gear 35; and the electronic control unit 70 for the hybrid...
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In a vehicle having a planetary gear mechanism to which an engine, a first motor, a drive shaft and a second motor are connected, while the engine is stopped, an increase rate (DeltaTr) by which required torque (Tr*), which is the torque required to be output to a drive shaft, is allowed to increase, is set based on an output limit (Wout) of a battery, and an actual torque (T*) is set with the required torque (Tr*) limited by the set increase rate (DeltaTr) (S 150, S 160). A torque limit (Tmax) of the second motor is set by dividing the output limit (Wout) by the rotational speed of the second motor, and control is performed so that the actual torque (T*) is output from the second motor with the upper limit of the torque limit (Tmax) (S260 to S290).
Description
technical field [0001] The present invention relates to a power output for outputting driving force to a drive shaft, a vehicle on which the power output is mounted and in which an axle is connected to the drive shaft, and a method of controlling the power output. Background technique [0002] As such a power output device, a power output device mounted on a hybrid vehicle including: an engine; a planetary gear mechanism in which the planetary carrier is connected to the crankshaft of the engine and the ring gear is connected to the the drive shaft of the drive shaft; the first electric motor, which is connected to the sun gear of the planetary gear mechanism; the second electric motor, which is connected to the drive shaft; and the battery, which supplies and receives electric power to and from the two electric motors (for example, see Japanese Patent Application Publication No. JP-A-2004-343935). JP-A-2004-343935 describes that when the engine is stopped, the available el...
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IPC IPC(8): B60K6/28B60K17/04B60L15/20F02D29/02F02N11/00B60K6/365B60K6/44B60K6/445B60K6/52B60L50/16B60W10/06B60W10/08B60W10/26B60W20/00
CPCY02T10/6286Y02T10/6217B60W2710/0672Y02T10/7044B60W10/06B60W2510/244B60K6/445Y02T10/7005B60W2710/0666Y02T10/705B60L11/123B60L11/1861B60W10/08B60L2240/423Y02T10/6239B60L2240/486B60W2710/083B60W2510/105B60W20/00B60W2710/105Y02T10/7258B60W2710/1055B60L11/14Y02T10/7077B60W10/26Y02T10/642B60L2220/14B60L50/61B60L50/16B60L58/12Y02T10/62Y02T10/64Y02T10/70Y02T10/7072Y02T10/72B60W20/11
Inventor 合田英明上地健介岩濑教宽
Owner TOYOTA JIDOSHA KK