Patent · US Active

Controlling the fuel pressure in an injection system

US9587580B2 · kind B2 · utility

0Cited by

2References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Lars Hermann · Schindellegi, CH
Martin Friedrich · Harsum, DE
Christoph Benz · Ohlsbach, DE
Oliver Schulz · Göppingen, DE
Thomas Wieland · Stuttgart, DE
Roberto Scarfone · Eßlingen, DE

Key dates

Filing date	Jan 28, 2014
Grant date	Mar 7, 2017
Priority date	—
Expiry date	Feb 25, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/62
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method for controlling a pressure (32, 34) in an injection system (14) for an engine (12) of a vehicle (10) comprises the following steps: determining whether the vehicle (10) is decelerating; reducing the delivery rate of a high-pressure pump (16) that supplies fuel to the injection system (14); reducing the pressure in the injection system (14) to a standstill pressure (ps) by means of idle operation of the engine (12); estimating a standstill time (t1) at which the vehicle (10) comes to a standstill; and reducing the delivery rate of the high-pressure pump (16) before the standstill time (t1) is reached, such that the standstill pressure (ps) is attained in the injection system (14) at the standstill time (t1).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.