METHOD FOR OPERATING A FEED PUMP OPERATING IN A PULSATING MANNER AND MOTOR VEHICLE HAVING A FEED PUMP

摘要

A method for operating a feed pump operating in a pulsating manner in a feed unit to feed a liquid operating substance in a feeding direction, is used in a motor vehicle. The feed pump has a feed piston and a drive coil for driving the feed piston. The feed unit has a pressure sensor downstream of the feed pump in the feeding direction. A voltage profile is firstly applied to the drive coil. A feed stroke of the feed piston is subsequently carried out in accordance with the voltage profile. In this context, a pressure profile in the feed unit downstream of the feed pump in the feeding direction is monitored. This pressure profile is subsequently evaluated. The voltage profile is subsequently adapted as a function of at least one characteristic property of the pressure profile. A motor vehicle having a feed pump is also provided.

主权项

1. A method for operating a feed pump operating in a pulsating manner, the method comprising the following steps:
providing a feed unit having a feed pump with a feed piston and a drive coil configured to drive the feed piston, and providing the feed unit with a pressure sensor downstream of the feed pump in a feeding direction; a) applying a voltage profile to the drive coil; b) carrying out a feed stroke of the feed piston in accordance with the voltage profile; c) monitoring a pressure profile in the feeding direction downstream of the feed pump; d) evaluating the pressure profile; and e) adapting the voltage profile as a function of at least one characteristic property of the pressure profile.