An input-split two-speed transmission system for a hybrid vehicle and the vehicle
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A technology for a hybrid vehicle and a transmission system, applied in the field of hybrid vehicles, can solve the problems of difficult layout, poor robustness, complex structure, etc., and achieve the effects of improving economy, easy layout, and improving operating efficiency
Active Publication Date: 2022-04-01
XI AN JIAOTONG UNIV
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Problems solved by technology
There are many configurations related to hybrid hybrid systems, but while satisfying the superior driving performance, the configurations are often accompanied by complex structures and poorly robust controls, and the layout is difficult
Method used
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Embodiment 1
[0038] refer to figure 1 , an input-split two-speed transmission system for a hybrid vehicle, comprising an engine 11, an electric motor 6, a starter generator 9, a clutch 17, a brake, a planetary gear train, a coupling sleeve 19, a final reducer 4 and a differential 2 , the planetary gear train includes a sun gear 13 , planetary gears, a planet carrier 14 and an inner ring gear 15 , and the brakes include an engine brake 12 and a motor brake 16 .
[0039] The engine 11 is connected with the planetary carrier 14 through the engine brake 12 , the motor 6 is connected with the ring gear 15 through the motor clutch 17 and the motor brake 16 , and the starter generator 9 is connected with the sun gear 13 through the single speed ratio gear 10 .
[0040] refer to figure 1 , the integrated starter generator 9 is connected to the battery pack 7 through an inverter / transformer 8 , and the motor 6 is connected to the battery pack 7 through an inverter / transformer 8 .
[0041] refer t...
Embodiment 2
[0062] Embodiment 2, with reference to Figure 10 , 11 , the intermediate gear 22 and the two-speed final reducer can completely replace the first gear set 5 or the second gear set 18 and the single-speed final reducer 4 in Embodiment 1, and have the same working effect.
[0063] refer to Figure 10 , when the fork 23 engages the short ring gear 20, the sun gear of the two-speed main reducer is locked, and the planetary gear train of the two-speed main reducer acts as a deceleration, which is a low gear.
[0064] refer to Figure 11 , when the fork 23 engages the long ring gear 21, the sun gear of the two-speed main reducer is connected with the planetary carrier. At this time, the sun gear, the planetary carrier and the inner ring gear of the two-speed final drive have the same speed, and the transmission ratio is 1, for the high gear.
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Abstract
The invention belongs to the technical field of automobile hybrid power, and in particular relates to an input-splitting two-speed transmission system for a hybrid automobile and the automobile. An input-split two-speed transmission system for a hybrid vehicle, comprising an engine, an electric motor, a starter generator, a clutch, a brake, a planetary gear train, a reduction mechanism, and a differential; the clutch includes a motor clutch; the brake includes Engine brake and motor brake; the planetary gear train includes sun gear, planetary gear, planet carrier and ring gear; the engine is connected to the planet carrier through the engine brake, and the motor is connected to the ring gear through the motor clutch and motor brake. The integrated generator is connected to the sun gear through a single-speed ratio gear; the output torque of the inner ring gear is coupled with the torque of the motor, and then transmitted to the wheels through the reduction mechanism and the differential. The invention can reduce fuel consumption and emission while ensuring the performance of the whole vehicle, and is easy to arrange.
Description
technical field [0001] The invention belongs to the technical field of automobile hybrid power, and in particular relates to an input-splitting two-speed transmission system for a hybrid automobile and the automobile. Background technique [0002] Under the background of severe environmental pollution caused by automobile exhaust, declining oil reserves and rising oil prices, the manufacturing industry began to search for suitable energy sources to replace gasoline and diesel to drive vehicles, so as to improve the energy structure. As a transitional model from fuel vehicles to electric vehicles, hybrid electric vehicles use electric motors to level the peaks and fill valleys of engine output power, which can significantly reduce energy consumption and emissions while ensuring the power of fuel vehicles. [0003] A well-designed drivetrain is the basis for low-emission, high-efficiency hybrid vehicles. The serial hybrid electric vehicle decouples the engine speed through th...
Claims
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