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Method and device for stopping motor vehicle stably

A motor vehicle, stable technology, applied in the direction of brakes, etc., can solve the problem of motor vehicles not being able to stop

Active Publication Date: 2017-11-03
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the braking torque produced by the brake pressure is slightly lower than the slip torque provided by the motor vehicle (for example, in the case of a vehicle equipped with an automatic transmission), the motor vehicle cannot be stopped

Method used

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  • Method and device for stopping motor vehicle stably
  • Method and device for stopping motor vehicle stably

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Embodiment Construction

[0033] Components with the same function always have the same reference numerals in the different figures, so these are also usually only described once.

[0034] figure 1 A flow chart of a method 1 for a smooth stop of a motor vehicle according to the invention is shown according to a first exemplary embodiment.

[0035] from figure 1 It can be seen that in step 2 of method 1 a check is made to determine whether a stopping operation of the motor vehicle is in progress. exist figure 1 In the exemplary embodiment of method 1 shown, the stopping operation is in progress when the absolute value of the longitudinal speed of the vehicle is below about 1 km / h. Method 1 stays in step 2 if the absolute value of the longitudinal velocity remains above this threshold.

[0036] Thus, in the following step 3, it is ensured that almost all the driving torque of the motor vehicle has been compensated by the braking torque applied by the driver.

[0037] In step 3 , a slip torque is pro...

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PUM

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Abstract

A method for stopping a motor vehicle stably at least comprises the following steps during the stop operation (2) of the motor vehicle: providing (3) a creep torque via a drive train of the motor vehicle; then, or increasing, independently of the driver, engine speed (4) of a drive engine of the drive train to increase a drive torque of the drive engine and simultaneously increasing (5), independently of the driver, a braking torque of a brake system of the motor vehicle to achieve a constant ratio between the drive torque and the braking torque of the motor, wherein the maximum braking torque is as great as the creep torque during a standstill of the motor vehicle; and maintaining (5) the maximum braking torque and simultaneously reducing (7) the engine speed of the drive engine to a point at which the motor vehicle comes to a standstill; or applying (9), independently of the driver, a braking torque by a brake system of the motor vehicle, wherein the applied braking torque is as great as the creep torque present when the motor vehicle is at a standstil; and then maintaining (6) the braking torque and simultaneously reducing (10) the creep torque of the drive train up to a point at which the motor vehicle comes to a standstill. The invention further relates to an electronic control device for stably stopping the motor vehicle. The electronic control device comprises a device for executing the methods (1, 8).

Description

technical field [0001] The present invention relates to a method and device for smooth stopping of a motor vehicle. Background technique [0002] In the past, the function of a smooth stop (also referred to as "soft stop") of a motor vehicle has been achieved by the intervention of the service brake of the motor vehicle. [0003] DE 10 2006 034 357 A1 discloses a method for smooth stopping of a motor vehicle, in which the hydraulic pressure generated by a foot-actuated braking system is reduced independently of the driver during the stopping operation. Similar methods are also described in DE 10 2005 029 891 A1 and US 2007 / 0182243 A1. [0004] US 8 983 751 B2 also describes a method for automatically braking and stopping a motor vehicle by adaptive speed regulation, wherein the jerk perceivable by the vehicle occupants is reduced at least during the stop of the motor vehicle. [0005] DE 199 37 942 A1 likewise describes a method for automatic regulation of vehicle distance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/18B60W10/04B60T8/17
CPCB60T8/17B60W10/04B60W30/181B60W10/06B60W10/184B60W30/18063B60W30/18109B60W2520/10B60W2710/0644B60W10/02B60W10/023B60W2510/0657B60W2520/04B60W2710/027
Inventor 阿什特·达丝托马斯·斯文森
Owner FORD GLOBAL TECH LLC
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