Mechanical and electrical stepless speed change composite transmission system and control method thereof
A compound transmission and mechanical transmission technology, which is applied in transmission control, motor vehicle, transmission, etc., can solve the problems of unable to meet the transmission requirements of multi-working conditions, EVT overheating, etc., to improve fuel economy, reduce shifting shock, The effect of increasing the speed ratio adjustment range
Pending Publication Date: 2022-06-07
JIANGSU UNIV
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Problems solved by technology
However, when the EVT is directly connected to the output shaft, it will encounter the problem of EVT overheating at higher speeds, so the single EVT transmission mode cannot meet the transmission needs of multiple working conditions
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[0073] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0074] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying t...
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The invention discloses a mechanical and electrical stepless speed change composite transmission system and a control method thereof, the mechanical and electrical stepless speed change composite transmission system comprises an input shaft assembly, a mechanical transmission assembly, an electric transmission assembly and an output shaft assembly, and switching of a single-flow transmission mode, a composite transmission mode and an energy recovery mode is achieved through combined switching between a clutch and a brake; the single-flow transmission mode comprises an EVT transmission mode and a mechanical transmission mode; the composite transmission mode is an EVT and mechanical composite transmission mode. The method has the beneficial effects that the method can adapt to different working conditions, the engine power utilization rate is increased, and the fuel economy is improved; the gear shifting impact is effectively reduced, and the speed ratio adjusting range is enlarged; in the aspect of power adjustment, the electric transmission assembly can effectively supplement driving force through the energy storage device, and the EVT can also recycle energy during braking. According to the invention, the speed regulation range is effectively widened, and the requirements of large-range linear and nonlinear stepless speed regulation can be met.
Description
technical field [0001] The invention relates to a transmission system and a control method thereof, and particularly provides a composite transmission system with a mechanical and electrical stepless speed change and a control method thereof, belonging to the technical field of variable speed transmission devices. Background technique [0002] Automobile transmission is the core component of automobile transmission system and one of the important evaluation indicators of vehicle performance. In the driving process of the car, the transmission of the car changes the transmission ratio between the engine and the driving wheel, so that the engine always works in its best dynamic performance state, adapting to different forms such as starting, accelerating, driving and overcoming various road obstacles. The need for different requirements for driving wheel traction and vehicle speed under different conditions. [0003] When the oil of the hydraulic mechanism in the traditional ...
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IPC IPC(8): F16H3/70F16H3/62F16H57/023F16H57/08F16H61/04F16H61/32B60K17/08B60K17/02B60K17/12
CPCF16H3/70F16H3/62F16H57/023F16H57/082F16H61/04F16H61/32B60K17/08B60K17/02B60K17/12F16H2200/0039F16H2061/323F16H2200/201F16H2200/2048Y02T10/62
Inventor 朱镇后睿陈龙蔡英凤田翔孙晓东韩江义夏长高张奕涵盛杰
Owner JIANGSU UNIV