Method of controlling fuel injection in engines
US5746182A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 1997 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Mar 13, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/102
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection control method for an engine. Each cylinder accommodates a piston that reciprocates in accordance with rotation of a crankshaft. Each piston performs a suction stroke in accordance with the position of the crankshaft. The intake passage draws air into the cylinders. The throttle valve adjusts a passage area of the intake passage. The throttle valve may suddenly increase the passage area during engine acceleration. The fuel injection valve is provided in association with each of the cylinders to inject fuel for the associated cylinder. The method includes performing sequential injection by injecting fuel in accordance with the position of the crankshaft, performing non-sequential injection in a manner unrelated to the position of the crankshaft in addition to sequential injection when the throttle valve suddenly increases the passage area of the intake passage, which increases the flow rate of intake air, so as to compensate for the increased flow rate of intake air, determining whether the present flow rate of intake air for a selected cylinder will increase, and prohibiting non-sequential injection when it is determined that the flow rate of intake air for the sel…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.