Gear shifting control method for manual gearbox

Abstract

The invention provides a gear shifting control method for a manual gearbox. The gear shifting control method comprises the following steps that a, an initial rotating speed of an input shaft of a clutch is preset in a controller; b, the state of the clutch is detected, and when the clutch is in a disengagement state, the rotating speed of the input shaft of the clutch is adjusted to the initial rotating speed; c, a gear shifting process is completed, and the clutch is restored to an engagement state; d, the rotating speed of the input shaft of the clutch is detected, and the rotating speed ofthe input shaft of the clutch when the clutch is restored to the engagement state is recorded; and e, the multiple rotating speeds of the input shaft of the clutch recorded in steps (d) are collectedto form a gear shifting rotating speed interval, and the initial rotating speed is replaced according to the average value of the gear shifting rotating speed interval. According to the gear shiftingcontrol method, the problem that in the prior art, gear shifting impact is prone to occur when the manual gearbox is used for shifting is solved, and the gear shifting control method for the manual gearbox has the advantages that the gear shifting impact is reduced, and the gear shifting smoothness is improved.

Description

technical field [0001] The invention relates to a shift control method of a manual gearbox. Background technique [0002] Electric vehicles mainly include pure electric vehicles, hybrid vehicles, etc. At this stage, in the field of electric engineering vehicle manufacturing, many of them are modified on the basis of traditional internal combustion engine vehicles. In most cases, a manual transmission is used, and it is difficult for a manual transmission to control the speed difference between the clutch input shaft and the transmission input shaft when shifting gears; when the speed difference between the clutch input shaft and the transmission input shaft is too large , if the clutch is restored to the engaged state too quickly, it is easy to cause a shift shock and the shifting process is not smooth enough; even if the clutch is not restored to the engaged state too fast, it is easy to aggravate the wear of the clutch friction plate. [0003] Manual gearboxes cannot dire...

AI Technical Summary

Problems solved by technology

In most cases, a manual transmission is used, and it is difficult for a manual transmission to control the speed difference between the clutch input shaft and the transmission input shaft when shifting gears; when the speed difference between the clutch input shaft and the transmission input shaft is too large , if the clutch returns to the engaged state too quickly, it is easy to cause shifting shock and the shifting process is not smooth enough; even if the clutch is not restored to the engaged state too quickly, it is easy to aggravate the wear of the clutch friction plate

[0003] Manual gearboxes cannot directly obtain the specific gear position of the current forward gear without installing a gear sensor.

If a gear position sensor is installed on the gearbox body, the gearbox needs to be redesigned considering that the performance requirements of the gearbox’s sealing and lubrication cannot be reduced, and the manufacturing cost and cycle time will be greatly increased.

If the automatic transmission is directly adopted, its manufacturing cost and maintenance cost will be relatively higher

Whether it is adding a gear sensor or using an automatic gearbox, it will increase the cost and make the system more complicated