Patent · US Active

Method and apparatus for indirectly ascertaining the cylinder pressure in piston engines

US7654132B2 · kind B2 · utility

1Cited by

3References

20Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Manfred Birk · Oberriexingen, DE
Michael Kessler · Rutesheim, DE
Martin Buchholz · Bietigheim-Bissingen, DE

Key dates

Filing date	May 25, 2007
Grant date	Feb 2, 2010
Priority date	—
Expiry date	Jul 29, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG01M15/08
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a method for indirectly ascertaining the cylinder pressure during the operation of piston engines by measuring cylinder pressure-dependent parameters at crankshaft bearings of the piston engine, one essential feature is that the force which is introduced by the main bearings of the crankshaft into an engine housing is measured. For performing the method, sensors for obtaining cylinder pressure-correlating signals are disposed on the bearing screws, and that the signals generated by the sensors are carried to the outside.

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