Method and apparatus for inspecting rough idling of a multiple-cylinder engine
US4383440A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 3, 1981 |
| Grant date | May 17, 1983 |
| Priority date | — |
| Expiry date | Feb 3, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/027
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and an apparatus for inspecting rough idling of a multiple-cylinder engine. The method comprises the steps of obtaining the engine speed, obtaining from the data of the engine speed the minimum value of engine speed in the vicinity of the time of starting of explosion in each cylinder, finding differences between the minimum values of the cylinders and inspecting the condition of revolution of the engine by the differences. The apparatus for carrying the method comprises a rotation change detecting sensor, a cylinder sorting sensor mounted to a specific cylinder, a rotation change signal generator and an output difference operation circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.