Synchronous gear shifting method and synchronous gear shifting device
A gear shifting method and gear shifting device technology, applied in the direction of transmission control, toothed components, belts/chains/gears, etc., can solve the problems of reducing the service life of the synchronizer and burning the synchronizer, so as to improve the service life , avoid a lot of heat, and achieve the effect of fast and flexible switching
Inactive Publication Date: 2018-01-05
GREAT WALL MOTOR CO LTD
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Problems solved by technology
[0004] However, in the existing structure, it is a rigid combination that the high and low gear synchronizer moves left and right to combine with the sun gear coupling teeth or the cage coupling teeth, that is, the H / L shifting process belongs to the shift without power interruption, and this This kind of rigid combination will easily cause the synchronizer to generate a lot of heat during the combination process. When the lubrication and cooling are insufficient, it is easy to burn the synchronizer and reduce the service life of the synchronizer
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[0028] 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.
[0029] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0030] In order to alleviate or overcome the defects in the prior art, the synchronous shift method provided by the present invention includes:
[0031] When switching from the high speed gear to the low speed gear, the gear shift coupling gear 1 is disengaged from the high speed coupling gear 2, and the speed of the low speed coupling gear 3 is increased to synchronize and combine with the gear shift coupling gear 1;
[0032] and / or,
[0033] When switching from a low gear to a high gear, the shift engaging tooth 1 is disengaged from the low speed engaging tooth 3 , and the speed of the shift engaging tooth 1 is increased to be synchronized and combined with the high speed engaging t...
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The invention relates to the technical field of vehicle gear shifting, and discloses a synchronous gear shifting method and a synchronous gear shifting device. The gear shifting method comprises the steps that when the high-speed gear is switched into the low-speed gear, a gear shifting combined tooth piece disengages from a high-speed combined tooth piece, the rotation speed of a low-speed combined tooth piece is increased, and accordingly the low-speed rotation combined tooth piece and the gear shifting combined tooth piece can be synchronous and be combined; and / or, when the low-speed gearis switched into the high-speed gear, the gear shifting combined tooth piece disengages from the low-speed combined tooth piece, the rotation speed of the gear shifting combined tooth piece is increased, and accordingly the gear shifting combined tooth piece and the high-speed combined tooth piece can be synchronous and be combined. Due to the fact that the synchronous process from the large rotation speed difference to the small rotation speed difference or the same rotation speed is needed before two to-be-combined tooth pieces are combined, high gear and low gear rapid and flexible switching can be achieved, a large amount of heat is prevented from being generated in the gear shifting process, and the service life is prolonged.
Description
technical field [0001] The invention relates to the technical field of vehicle gear shifting, in particular to a synchronous gear shifting method and a synchronous gear shifting device. Background technique [0002] At present, with the development of vehicle technology, the popularity of SUV is getting higher and higher. According to the layout of the engine, four-wheel drive SUVs can be divided into four-wheel drive systems based on horizontal front-mounted front-wheel drive four-wheel drive systems and longitudinal front-mounted rear-wheel drive systems. Timely four-wheel drive (Part-time Drive) and timely four-wheel drive (On TimeDrive). Correspondingly, the full-time four-wheel drive can realize the power output of the front and rear wheels according to a certain torque ratio. If the central differential has a locking function, it can realize the rigid locking of the front axle / rear axle, making the vehicle easy to get out of trouble under extreme working conditions; ...
Claims
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IPC IPC(8): F16H61/04
Inventor 徐兆攀贾雨灵王鹏夏海军
Owner GREAT WALL MOTOR CO LTD