Control device for operating a window wiper in a motor vehicle

US6121741A · kind A · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Josef Berger · Tegernsee, DE
• Alf Blessing · Bad Boll, DE
• Rainer Maeckel · Rübhausen, DE
• Roland Mauser · Ludwigsburg, DE

Key dates

• Filing date: Jun 16, 1998
• Grant date: Sep 19, 2000
• Expiry date: Jun 16, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60S1/0818
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A control device operates a window wiper in a motor vehicle, and includes a switching device for the selection of several wiping functions, a sensor device for determining a wetting degree of a window, and an electronic analyzing system. The window wiper is capable of being operated, depending on the wiping function selected by the user, in a continuous wiping operation and/or in a single wiping operation. The electronic analyzing system, during a first wiping function, analyzes the determined wetting degree of the window and, depending on the determined wetting degree of the window, in a continuous wiping operation, sets a wiping frequency and/or, in a single wiping operation, activates a wiping cycle for the window wiper. The electronic analyzing system sets the wiping frequency of the window wiper in the continuous wiping operation during a second wiping function within a second wiping frequency band, and during a third wiping function, within a third wiping frequency band, and during the first wiping function, within a first wiping frequency band, depending on the analysis of the wetting degree of the window, an actual wiping frequency being set which is as optimal as possible.…