Patent ID: 7207312

Claim:
An internal combustion engine, comprising: a cylinder block formed with a cylinder bore, a cylinder head operatively connected to the cylinder block, a piston slidably disposed in the cylinder bore to define a combustion chamber, an engine front side squish area and an engine rear side squish area wherein the engine front and rear side squish areas include narrow gaps formed between the cylinder head and the piston and wherein the engine front and rear side squish areas generate a squish flow in the combustion chamber in response to the piston moving within the cylinder bore, wherein the engine front side squish area and the engine rear side squish area are placed within the cylinder bore at an engine front side and an engine rear side respectively, an engine front side igniter plug having a pair of electrodes and an engine rear side igniter plug having a pair of electrodes placed adjacent the respective engine front and rear side squish areas so that squish flow may pass through an igniter gap defined between the pairs of electrodes of the front and rear side igniter plugs, a pair of intake valves generally aligned in a crankshaft axial direction such that one intake valve is positioned on the engine front side and one intake valve is positioned on the engine rear side, and a pair of exhaust valves generally aligned in a crankshaft axial direction such that one exhaust valve is positioned on the engine front side and one exhaust valve is positioned on the engine rear side.