Robert Boschgmbh

Roberto Scarfone

Thomas Wieland

Oliver Schulz

Christoph Benz

Martin Friedrich

Lars Hermann

A fuel supply device (), in particular for use in a motor vehicle comprising an internal combustion engine (), has a fuel supply pump () which is designed to remove fuel () from a fuel tank () and to release said fuel under increased pressure through an outlet; a first fluid connection () which is provided for connecting an exhaust line metering device () and; a second fluid connection () which is provided for connecting an engine injection device (). The first fluid connection () is directly connected to the outlet of the fuel supply pump (). A fluid choke () is arranged between the outlet of the fuel supply pump () and the second fluid connection (). The invention enables an exhaust line metering device () and an engine injection device () to be operated reliably on a common fuel supply device ().

Fuel supply device for engine injection and exhaust-gas after treatment

A method for controlling a pressure () in an injection system () for an engine () of a vehicle () comprises the following steps: determining whether the vehicle () is decelerating; reducing the delivery rate of a high-pressure pump () that supplies fuel to the injection system (); reducing the pressure in the injection system () to a standstill pressure (p) by means of idle operation of the engine (); estimating a standstill time (t) at which the vehicle () comes to a standstill; and reducing the delivery rate of the high-pressure pump () before the standstill time (t) is reached, such that the standstill pressure (p) is attained in the injection system () at the standstill time (t).

Growing community of inventors

Esslingen, Germany

Roberto Scarfone