Method and apparatus for timing diesel engines
US4023403A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1975 |
| Grant date | May 17, 1977 |
| Priority date | — |
| Expiry date | Jul 11, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The specification discloses an improved method and apparatus for determining the time angle of a diesel engine which, in contrast to the present day method, is one which is fast, accurate, and can be readily used on a production line basis. There is disclosed a method and apparatus which, by the utilization of pulses of fixed angular frequency produced by an encoder, and counted between the moment the pressure in the injector line of the cylinder, whose timing angle you are measuring, reaches a predetermined pressure and the moment the piston in the same cylinder reaches top dead center, a number of pulses representing the timing angle of the engine is obtained, which can easily be converted into a reading of the timing angle. The pulses are essentialy counted by producing a signal when the pressure in the injector line reaches a certain predetermined value, after which time all other pressure signals are locked out in a predetermined manner, with the count of pulses being stopped when the next top dead center signal occurs. By providing a lockout period based on degrees of crankshaft rotation for all timing applications, except where the engine being timed in intended to be run at…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.