Method and arrangement for checking the operability of a fluid-flow conducting conduit system of an internal combustion engine
US5388558A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1993 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Apr 22, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M26/49
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention is directed to a method for checking the operability of a conduit system conducting a fluid flow. The conduit system is for an internal combustion engine and utilizes two fluids having temperatures which are different from each other. In this way, it is possible to set quite well-defined measuring conditions. The fluid flow in the conduit system to be checked is coupled to the temperature sensor in such a manner that the temperature thereof changes with a relatively steep gradient when, starting at a specific time point, the above-mentioned fluid operates to warm the temperature sensor. When the magnitude of the gradient remains below a threshold value, the conduit system checked is evaluated to be operational. The measurement is reliable even though it requires only a single temperature sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.