Internal combustion engine
An internal combustion engine is described comprising a cylinder block having cylinders in which pistons are respectively slidably received, and a cylinder head fixedly mounted on the cylinder block to form combustion chambers respectively with at least pistons. Each combustion chamber is provided with a pair of intake ports each of which is opened and closed by an intake valve, a pair of exhaust ports each of which is opened and closed by an exhaust valve and a means for forming flame in the combustion chamber receiving hole into which means for forming flame in the combustion chamber is inserted, a single overhead camshaft for driving the intake and exhaust valves in which the exhaust valves for opening and closing the pair of exhaust ports for each combustion chamber are respectively driven by rocker arms which are supported on a first rocker arm shaft and in which intake valves for opening and closing the pair of intake ports for each combustion chamber are respectively driven by rocker arms which are supported on a second rocker arm shaft. Each means for forming flame in the combustion chamber receiving hole is obliquely formed in the cylinder head between a pair of exhaust ports associated with a combustion chamber so that the inner end of each means for forming flame in the combustion chamber receiving hole opens to the combustion chamber substantially in the middle thereof and the outer end of the same opens toward the outside of the cylinder head at a portion between, as viewed in the crankshaft direction of the engine.
- Assignee:
- Mazda Motor Corp.
- Patent Number(s):
- US 4741302
- OSTI ID:
- 7033996
- Country of Publication:
- United States
- Language:
- English
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