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Module in a vehicle control system

一种控制系统、车辆的技术，应用在控制装置、车辆配件、车辆部件等方向，能够解决干扰舒适度、燃料损失、少速度等问题，达到改善燃料节约、改善性能、避免降档的效果

Inactive Publication Date: 2012-05-16
SCANIA CV AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a shift would cause unnecessary fuel loss compared to if the downshift could be avoided
[0012] There are other situations where it is good practice to change gears before going uphill so that you are already in the correct gear before starting the climb, especially since if you do it before a climb when there is less load on the engine, then the gear will interfere less with comfort and will lose less speed during the shift

Method used

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  • Module in a vehicle control system
  • Module in a vehicle control system
  • Module in a vehicle control system

Examples

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Embodiment Construction

[0036] The present invention will be described in detail below with reference to the accompanying drawings.

[0037] Information about the vehicle's route can be used to pre-adjust the setpoint speed v of the cruise control in that vehicle ref , in order to save fuel, enhance safety and improve comfort. Other setpoint values ​​for other control systems may also be adjusted. Terrain greatly affects the control of the driveline especially in heavy vehicles, since more torque is required uphill than downhill to enable climbing certain hills without shifting gears.

[0038] The vehicle is provided with a positioning system and map information, and position data from the positioning system and terrain data from the map information are used to construct a field of view characterizing the route. In the description of the invention, GPS (Global Positioning System) is used to determine the vehicle's position data, but it should be realized that other kinds of global or regional posit...

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Abstract

A module for determining speed set-point values vref for a vehicle's control systems, comprising an input unit adapted to input, e.g. by the vehicle's driver, of a reference speed vset which is the speed desired by the driver for the vehicle. The module comprises - a horizon unit adapted to determining a horizon by means of received position data and map data of an itinerary made up of route segments with at least one characteristic for each segment; - a processor unit adapted to calculating vref across the horizon according to rules pertaining to categories in which segments within the horizon are placed, so that vref is within a range bounded by vmin and vmax, where vmin = vset = vmax. The processor unit is further adapted to determining a control signal with control parameters for the vehicle's automatic gear change control unit, based on one or more vehicle-specific values and a calculated speed set-point value vref.

Description

technical field [0001] The present application relates to a module for determining a setpoint value of a control system in a vehicle according to the presentation of the independent claims. Background technique [0002] Today, many vehicles are equipped with cruise control to make driving the vehicle easier for the driver. The desired speed can then be set by the driver, for example via controls in the steering wheel console, after which the cruise control system in the vehicle operates according to the control system to accelerate and brake the vehicle in order to maintain the desired speed. If the vehicle is equipped with an automatic shift system, the vehicle shifts gears so that the vehicle can maintain a desired speed. [0003] When using cruise control in hilly terrain, the cruise control system will attempt to maintain the set speed when going uphill. This especially causes the vehicle to accelerate over hilltops and possibly all the way downhill later, necessitatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/14B60W10/06B60W10/10F16H59/66F16H61/02
CPCF16H59/66F16H2061/0216B60W10/10F16H61/0213B60W10/06F16H2059/666B60W30/143B60W2720/10B60W2720/103Y02T10/52B60W2550/402B60W50/0097B60W2552/20B60W2556/50B60W2552/15Y02T10/40B60K31/00B60W40/076F16H59/14G01C21/32F16H2059/663G01C21/38
Inventor O·约翰松J·汉松H·彼得松F·斯瓦特林
Owner SCANIA CV AB
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