A vehicle low temperature start control method and computer storage medium
A control method and low temperature technology, applied in the field of start control and hybrid electric vehicles, to achieve the effect of simplifying control and calibration difficulty, and simplifying control complexity
Active Publication Date: 2022-06-03
CHONGQING CHANGAN AUTOMOBILE CO LTD
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Problems solved by technology
[0005] The present invention provides a vehicle starting control method with a hydraulically controlled clutch, which solves the problem of the hydraulically controlled clutch starting overrun or under pressure in special environments such as low temperature. The method starts from the torque characteristics of the power source and the hydraulic response characteristics of the clutch, and proposes a new control logic. Simplify the previous control complexity, easier to calibrate and control
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[0028] The technical solutions implemented by the present invention will be further described below with reference to the accompanying drawings in the specification, taking low temperature start control as an example. The described embodiments are only a part of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill without creative work fall within the protection scope of the present invention.
[0029] The technical solution implemented by the present invention is based on figure 1 The vehicle shown in the power transmission configuration through the clutch, the power system of this configuration includes but is not limited to components such as the engine, the motor, the clutch, the gearbox and the final reducer. The power is transmitted through the disconnection and engagement of the clutch or slippage, and the power system can realize pure electric, hybrid drive, engine independent drive and other modes.
[0030] The techni...
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The invention provides a vehicle low-temperature starting control method and a computer storage medium. The method is to limit the torque of the power source at low temperature, and reduce the torque response capability of the power source by comparing the slope to a smaller one, so as to achieve re-matching due to low temperature. Influence, and respond to hysteresis clutch torque, so as to solve the problem of hydraulically controlled clutch start flying under low temperature and other special environments. This method starts from the torque characteristics of the power source and the hydraulic response characteristics of the clutch, and simplifies the control complexity through the new control logic, making it easier to calibrate and control.
Description
technical field [0001] The invention belongs to the control technology in the field of automobile vehicle power, and in particular relates to the start control technology of a hybrid vehicle or a conventional vehicle equipped with a hydraulically controlled clutch automatic transmission (such as DCT) under special circumstances such as low temperature and complex environment. Background technique [0002] In vehicle start control, in order to solve the problem of speeding at low temperature, the existing control scheme is to use engine speed control to ensure that the power source of the engine does not speed, which will cause a certain performance loss and cause the vehicle to start due to environmental changes. There are two sets of starting logic to switch, and the control is complicated. Another control scheme is to intervene in engine torque reduction, and send the engine torque reduction request to the engine to prevent the engine torque from responding too quickly at ...
Claims
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IPC IPC(8): B60W30/18B60W10/02B60W10/06
CPCB60W30/18027B60W10/024B60W10/06Y02T10/72
Inventor 邓兴康杨柏林侯聪张猛费丹丹
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD