Internal combustion engine with an auxiliary chamber
Patent
·
OSTI ID:6403779
Disclosed is an internal combustion engine comprising a main chamber and an auxiliary chamber which are interconnected with each other via a connecting passage. An annular raised portion is formed in the inner wall of the auxiliary chamber so as to divide the auxiliary chamber into a first auxiliary chamber and a second auxiliary chamber. The connecting passage is tangentially connected to the second auxiliary chamber for creating a strong swirl motion in the first auxiliary chamber. This strong swirl motion causes a secondary swirl motion in a portion of the recess, which is located at a position opposite to the inner wall to which the connecting passage is tangentially connected with respect to the axis of the auxiliary chamber. The nozzle of a fuel injector is disposed in the auxiliary chamber so as to be directed to the recess portion for forming a rich air-fuel mixture therein. The spark gap of a spark plug is located in the recess portion. An additional connecting passage communicating the recess portion with the main chamber is formed in the cylinder head and is tangentially connected to the inner wall of the recess portion for strengthening the secondary swirl motion.
- Assignee:
- Toyota Jidosha Kogyo Kabushiki Kaisha
- Patent Number(s):
- US 4116191
- OSTI ID:
- 6403779
- Country of Publication:
- United States
- Language:
- English
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