Fuel line pressure test
US5616837A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1994 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Jun 6, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/0602
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for testing fuel line integrity and flow volume in a fuel injected internal combustion engine includes the steps of turning on a fuel pump connected to a fuel supply line with the engine's fuel injectors closed so as to pressurize fuel within the fuel line to a static condition, measuring fuel system pressure in the static condition, comparing the static condition fuel system pressure with a range of predetermined static pressures for an unobstructed fuel line, opening all fuel injectors to allow fuel flow through the fuel injectors such that the fuel system is in a fully loaded condition, measuring fuel system pressure in the fully loaded condition, and comparing the fully loaded condition fuel system pressure with a range of predetermined fully loaded pressure for an unobstructed fuel line. The test can be performed without breaking the fuel line and with a minimal number of hardware components, including a communication cable, a pressure transducer, a power source, an electronic computer and video display terminal. The system for performing the test includes a processor for giving timed commands to a fuel injected apparatus, a transducer for sensing the response of the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.