Engine monitoring apparatus
US4109518A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1977 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | May 11, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Engine monitoring apparatus is disclosed in which the cylinder pressure changes in a fuel injected engine are monitored through the use of a transducer device which produces an electrical signal responsive to pressures exerted on an injector nozzle from within the cylinder. The transducer is mounted to the nozzle holding brackets or fasteners which act to maintain pressure tending to seat the nozzle against an inlet port in the cylinder and, as such, is responsive to axial pressures exerted on the nozzle assembly from within the cylinder. Methods and apparatus for mounting the transducer device to the holding brackets of various types of nozzle assemblies are disclosed along with read-out devices including a tachometer circuit for utilizing the transducer output signal for performance monitoring and diagnostic applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.