Patent · US Expired

Direct injection valve in a cylinder head

US7418947B2 · kind B2 · utility

0Cited by

13References

10Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Bernhard Gottlieb · Munich, DE
Andreas Kappel · Höhenkirchen-Siegertsbrunn, DE
Tim Schwebel · Birkenfeld, DE

Key dates

Filing date	Sep 26, 2005
Grant date	Sep 2, 2008
Priority date	—
Expiry date	Dec 23, 2025

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/858
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A direct injection valve in a cylinder head (1) consists of a cylindrical housing comprising the following components: a valve (16) for dosing a fluid by means of a valve needle (15), an actuator (2) for generating a stroke acting on the valve needle, and a fluid supply to the valve (16). In order to minimise the heat transfer from the cylinder head (1) to the injection valve, an air gap (3) surrounds the housing of the injection valve, maintaining the housing and the cylinder head at a distance from each other.

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