Outboard motor with internal combustion engine

Details Outboard motor with internal combustion engine Outboard motor with internal combustion engine

F - Mech Eng,Light,Heat,Weapons

01

L

F01L 1/02 (2006.01) F01L 1/26 (2006.01) F01L 13/00 (2006.01) F02B 61/04 (2006.01) F02D 13/02 (2006.01) F02F 1/42 (2006.01)

Patent

CA 2392793

An outboard motor includes an internal combustion engine provided with a pair of intake valves. The opening and closing operation of one of the intake valves can be paused. The internal combustion engine comprises a vertical crankshaft, a cylinder head provided with an intake port having a pair of intake openings for one combustion chamber, and a fuel injection valve for injecting the fuel into the intake port. The intake port has an upper branch section and a lower branch section extended under the upper branch section. A valve train includes a valve-operation mode changing mechanism. The valve-operation mode changing mechanism pauses the opening and closing operation of the first intake valve and operates the second intake valve for opening and closing the lower intake opening of the lower branch section while the internal combustion engine is operating at engine speeds in a low-speed range. Thus, the amount of the stagnant fuel staying on the wall surface of the intake port can be reduced, variation of the air-fuel ratio can be suppressed, and the stability of combustion can be improved.

Affiliated with

Also associated with

Rating

Outboard motor with internal combustion engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Outboard motor with internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Outboard motor with internal combustion engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1599938