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Engine control method and device for hybrid vehicle

A technology of a hybrid vehicle and a control method, which is applied in the field of vehicles and can solve problems such as unevenness and power disturbances that are prone to occur

Active Publication Date: 2021-11-16
HYCET TRANSMISSION TECH HEBEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention aims to propose a method for controlling the engine of a hybrid vehicle, so as to solve the problems of unevenness and power disturbance that are very likely to occur in the driving control of the engine

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  • Engine control method and device for hybrid vehicle
  • Engine control method and device for hybrid vehicle
  • Engine control method and device for hybrid vehicle

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Embodiment Construction

[0039] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] In addition, the hybrid vehicle mentioned in the embodiments of the present invention is an example of a P2 type series hybrid vehicle, and figure 1 It is a structural schematic diagram of the power system of a P2 type series hybrid vehicle. Such as figure 1 As shown, the power system of the P2 type series hybrid vehicle may include: a battery management system (Battery Management System, BMS) 1, a battery 2, a motor 3, a dual clutch automatic transmission (Dual Clutch Transmission, DCT) 4, a motor controller (MotorControl Unit, MCU) 5, transmission controller (TransmissionControlUnit, TCU) 6, front wheel 7, hybrid vehicle controller (Hybrid Control Unit, HCU) 8, engine 9, automatic clutch K0 10, engine controller (Engine Control Unit, ECU) 11. For this P2 type series hybrid vehicle, the input shaf...

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Abstract

The invention relates to the field of vehicle technology, and provides an engine control method and device for a hybrid vehicle. The engine control method according to the present invention includes performing driving start control on the engine, which includes: activating the first starting moment of the first starting command for the engine from the HCU, and controlling the odd-numbered gear clutch or the even-numbered gear clutch of the dual-clutch automatic transmission During the transition from the closed state to the slipping state, and from the first start moment to the second start moment when the second start command for the engine is activated, the motor torque is controlled to increase so that the total torque remains constant; from the second start From the time to the third starting moment when the oil pump of the engine starts to work, maintain the motor torque at the second starting moment; Total torque remains constant until engine cranking is complete. The invention ensures the smoothness and dynamics of the vehicle during the running of the engine, and avoids turbulence.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to an engine control method and device for a hybrid vehicle. Background technique [0002] At present, the world's automobile industry is facing two major problems: environmental pollution and lack of oil resources. Therefore, environmental protection and energy saving have become important development directions of current and future automobile technology. At the same time, the emission regulations of various countries are becoming increasingly strict. Following this trend, hybrid vehicles with low pollution and low fuel consumption have emerged as a new generation of clean energy vehicles. [0003] Taking the P2 type series hybrid vehicle as an example, the hybrid vehicle has two driving modes: fuel drive and electric drive. Based on these two driving modes, the advantage of the hybrid vehicle is that when the vehicle starts and stops, it is only driven by the motor and does not ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/06B60W10/02B60W10/08B60W20/15B60W20/40
CPCB60W10/06B60W10/02B60W10/08B60W20/15B60W20/40B60W2710/021B60W2710/027B60W2710/0644B60W2710/0666B60W2710/083Y02T10/62B60K6/48B60K2006/4825B60W10/113B60K2006/268B60K6/26B60W2710/025B60W2710/1005B60W2710/085
Inventor 刘海亮秦军超刘婧刘烨张宗甫窦志伟
Owner HYCET TRANSMISSION TECH HEBEI CO LTD
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