Control unit for drivetrain with centrifugal vibrator damper
A technology of power transmission system and control device, which is applied in the direction of control device, engine control, vibration suppression adjustment, etc. It can solve the problems of peripheral component contact, unstable vibrator action, abnormal noise, etc., and achieve the effect of reducing torque fluctuation
Active Publication Date: 2019-06-28
MAZDA MOTOR CORP
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Problems solved by technology
[0005] Here, the centrifugal vibrator damper connected to the power transmission shaft also rotates at a low speed in the low-rotation range of the engine, such as at the time of starting, and the centrifugal force acting on the vibrator is reduced. Therefore, the movement of the vibrator whose torque fluctuates due to the centrifugal force is suppressed. Becomes unstable and may come into contact with surrounding components and cause abnormal noise
Method used
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Embodiment Construction
[0063] Embodiments of the present invention will be described below.
[0064] figure 1 It is a schematic diagram showing the configuration of a powertrain 10 with a centrifugal vibrator damper (hereinafter, simply referred to as “powertrain 10 ”) according to an embodiment of the present invention. like figure 1 As shown, the power transmission system 10 includes: an engine 1, a transmission mechanism 3a of an automatic transmission 3 that transmits the driving force of the engine 1 to the drive wheels 2, and an output shaft 1a of the engine 1 and an input shaft 3b of the transmission mechanism 3a. The torsional damper mechanism 4 connected therebetween, and the centrifugal vibrator damper mechanism 5 connected to the input shaft 3b of the transmission mechanism 3a.
[0065] The engine 1 is a multi-cylinder engine whose operating state can be switched between an all-cylinder operation and a reduced-cylinder operation in which some cylinders of the engine are stopped.
[006...
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The invention relates to a control device for a power transmission system with a centrifugal vibrator damper, wherein the disconnection control part controls the disconnection state to the first state when the engine is running in full cylinder, and controls the disconnection state to the first state when the engine is running with reduced cylinders. Control to a second state with a higher tightening degree than the first state; when there is a request for the engine to change from reduced-cylinder operation to full-cylinder operation, the disconnection control part makes the clutch mechanism change from the second state to the first state, and the engine control part uses The engine changes from reduced-cylinder operation to full-cylinder operation; when there is a request for the engine to change from full-cylinder operation to reduced-cylinder operation, the disconnection control part makes the clutch mechanism change from the first state to the second state, and the engine control part is in the same state as the existing operation state. At least one of the time delays for a predetermined period of time from the request for transition from the reduced-cylinder operation to the full-cylinder operation, and the delay of a predetermined period of time after the disconnection state transitions from the first state to the second state, causes the engine to change from the full cylinder to the second state. The operation changes to the operation with reduced cylinders.
Description
technical field [0001] The present invention relates to a control device for a power transmission system of a vehicle, and more particularly, to a control device for a power transmission system having a centrifugal vibrator damper. Background technique [0002] Conventionally, in a vehicle equipped with a power transmission system constituting a power transmission path from the engine through an automatic transmission to the drive wheels, in order to improve the fuel consumption performance of the engine, it is known to use reduced-cylinder operation of the engine, HCCI combustion, and abolished torque conversion. Torque converter-free automatic transmission and other technologies. [0003] However, there is a problem that the fluctuation of the output torque becomes large in the engine that adopts reduced-cylinder operation and HCCI combustion. In addition, when the automatic transmission is used without a torque converter, the torque fluctuation of the engine is output fro...
Claims
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IPC IPC(8): F16F15/14F02D17/02
CPCF02D17/02F16F15/1478F02D2700/05F16D3/12F16D2300/22F02D41/022F02D41/10F02D41/0087F02D2250/28B60W10/02B60W10/06B60W30/182B60W30/20B60W2030/203B60W2710/021B60W2710/06F02D2250/21F16D48/06F16D2500/10412F16D2500/1045F16D2500/30401F16D2500/306
Inventor 中岛亨成中山康成齐藤忠志仲岸优堂面成史本瓦成人
Owner MAZDA MOTOR CORP