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Device and method for performing a gear change of a vehicle

A technology of gears and gearboxes, applied in the field of motor vehicles, computer program products, computer programs, and gear shifting steps, can solve problems such as long time and achieve cost-saving effects

Inactive Publication Date: 2012-07-11
SCANIA CV AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A disadvantage of performing a shift step in a motor vehicle in the manner indicated above is that it may take a relatively long time before reaching the desired target speed, especially if large shift steps are performed

Method used

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  • Device and method for performing a gear change of a vehicle
  • Device and method for performing a gear change of a vehicle
  • Device and method for performing a gear change of a vehicle

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0033] figure 1 A side view of vehicle 100 is shown. The exemplary vehicle 100 includes a tractor unit 110 having a trailer 112 . Vehicles can be heavy vehicles such as trucks or buses. The vehicle may alternatively be a car.

[0034] The term "link" herein refers to a communication link, which may be a physical connection such as an optical communication line, or a non-physical connection such as a wireless connection such as a radio link or a microwave link.

[0035] figure 2 Subsystems 299 of the vehicle 100 are shown. Subsystem 299 is located in tractor unit 110 . Subsystem 299 has an engine 220 with an output shaft 225 connected to clutch 230 . Engine 220 may be a combustion engine having any number of cylinders, such as 5 or 6 cylinders. Clutch 230 may be a clutch including two discs. Clutch 230 is also connected to gearbox 240 via shaft 227 . Gearbox 240 has an output shaft 245 connected to rear gear 250 . The rear drive gear 250 is connected to a first power...

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PUM

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Abstract

The invention relates to a method for executing a gear shift step in a motor vehicle (100; 110) comprising an engine (220) and an automated manual transmission incorporating a clutch (230) and a gearbox (240), which method comprises the steps, during a gear shift procedure, of: - controlling a torque (Tc) in said clutch (230) in order to make it possible for said gear shift step to take place before a target speed (rpm*) of the engine (220) is reached; and, when said clutch (230) has stopped sliding, of controlling a torque (Te) of the engine (220) on the basis of the torque (Tc) in the clutch (230). The invention relates also to a computer program product comprising program code (P) for a computer (200; 210) for executing a method according to the invention. The invention relates also to a device for executing a gear shift step in a motor vehicle (100; 110) comprising an engine (220) and an automated manual transmission incorporating a clutch (230) and a gearbox (240), and to a motor vehicle that is equipped with the device.

Description

technical field [0001] The invention relates to a method for performing gear shifting steps in a motor vehicle comprising an engine and an automated manual transmission (AMT) incorporating a clutch and a gearbox. The invention also relates to a computer program and a computer program product comprising program code for a computer for carrying out the method according to the invention. The invention also relates to a device for performing a gear shifting step in a motor vehicle, and to a motor vehicle equipped with this device. Background technique [0002] Now, in some vehicles, the step of shifting gears is performed by automatically controlling the torque of the vehicle's engine in such a way that the engine reaches a target speed at an appropriate level. The torque of the engine is controlled based on stored information indicating how much the torque ramp of the engine is to be affected for a particular shift step. The vehicle's clutch is typically closed during this sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/02B60W10/06B60W30/18F16D48/06
CPCF16D48/068F16D2500/7044F16H61/0437B60W10/06B60W10/02F16H63/502F16D2500/70454F16D2500/70426B60W30/19F16D2500/50239F16H61/682F16D48/06
Inventor F·斯瓦特林M·格兰斯特伦M·汉松
Owner SCANIA CV AB