Invention Grant
- Patent Title: Method and control unit for starting an otto engine
-
Application No.: US13850716Application Date: 2013-03-26
-
Publication No.: US09677489B2Publication Date: 2017-06-13
- Inventor: Hans-Friedrich Schwarz , Peter Schenk
- Applicant: Robert Bosch GmbH
- Applicant Address: DE Stuttgart
- Assignee: ROBERT BOSCH GMBH
- Current Assignee: ROBERT BOSCH GMBH
- Current Assignee Address: DE Stuttgart
- Agent Gerard Messina
- Priority: DE102012204758 20120326
- Main IPC: F02D41/06
- IPC: F02D41/06 ; F02D41/38 ; F02D19/06 ; F02D19/08 ; F02D41/30 ; F02D41/00 ; F02D41/40

Abstract:
A method and control unit for a start of an Otto engine operated at low temperatures, using ethanol and/or gasoline, having direct injection. The method includes generating by a high pressure pump a fuel pressure in a high pressure system connected to a high pressure reservoir; a sensor monitoring the fuel pressure in the reservoir and the system; injecting the fuel, by an injector, from the reservoir into a cylinder of the engine, the fuel pressure, an injection quantity and a fuel quantity being specified by a control unit based on, sensor the fuel pressure being specified based on the operating point of the engine up to an upper pressure which is below a starting pressure to which the fuel is increased before the fuel injection, and the fuel pressure in the reservoir and the system being limited to a maximum by an opening pressure of a limiting valve.
Public/Granted literature
- US20130275029A1 Method and control unit for starting an otto engine Public/Granted day:2013-10-17
Information query