Fuel injection controlling apparatus for internal combustion engine
US7317983B2 · kind B2 · utility
11Cited by
2References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2006 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | Jul 8, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/1004
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A sensor signal from a speed sensor is inputted into an ECU. The ECU calculates a rotation speed of a crankshaft in a predetermined period based on the sensor signal. The rotation speed is filtered by a frequency which is defined based on a combustion frequency of the engine to obtain a value corresponding to a current torque. The ECU calculates a workload of each cylinder based on the value corresponding to the current torque, and controls characteristic of each cylinder based on the workload.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.