Claims
- 1. A fuel injected four-stroke engine comprising:an engine block; a crankshaft disposed in said engine block; an encoder attached to said crankshaft; a reader proximate said crankshaft for detecting said encoder and for generating an angular position signal in response to detecting said encoder; a plurality of cylinders in said engine block; a plurality of intake paths, each communicating with a respective one of said plurality of cylinders; a plurality of pressure sensors, each communicating with a respective one of said plurality of intake paths, and each generating a pressure signal representative of a pressure within the respective intake path; a plurality of fuel injectors, each communicating with a respective one of said plurality of intake paths; an intake pressure memory for storing a combined value of the pressure signals occurring at a predetermined angular position of the crankshaft; and a control unit for controlling an injection timing of said plurality of fuel injectors based upon a comparison between a previously stored combined value of the pressure signals at the predetermined angular position of the crankshaft and a presently detected combined value of the pressure signals at the predetermined angular position of the crankshaft.
- 2. The fuel injected four-stroke engine according to claim 1, wherein said plurality of pressure sensors equals three pressure sensors.
- 3. The fuel injected four-stroke engine according to claim 2, wherein said three pressure sensors are associated with three cylinders of said plurality of cylinders, which are consecutive in a firing order of said fuel injected engine.
- 4. The fuel injected four-stroke engine according to claim 1, wherein said plurality of cylinders equal four cylinders and said plurality of pressure sensors equal two pressure sensors.
- 5. The fuel injected four-stroke engine according to claim 4, wherein said two pressure sensors are associated with two cylinders of said four cylinders, which are consecutive in a firing order of said fuel injected four-stroke engine.
- 6. The fuel injected four-stroke engine according to claim 1, wherein said plurality of cylinders equals four cylinders.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9-029255 |
Feb 1997 |
JP |
|
Parent Case Info
This application is a divisional of Application Ser. No. 09/023,705, filed on Feb. 13, 1998, now U.S. Pat. No. 6,170,322 the entire contents of which are hereby incorporated by reference.
US Referenced Citations (10)