Patent ID: 6968831

Claim:
A method of controlling combustion in an internal combustion engine comprising the steps of: transferring a first quantity of fuel and first post-combustion gases to a combustion chamber through an exhaust port to raise a temperature of said first quantity of fuel while an exhaust port pressure in said exhaust port is higher than a first combustion chamber pressure; transferring pre-combustion gases into said combustion chamber at said first combustion chamber pressure; mixing said first quantity of fuel, said pre-combustion gases, and said first post-combustion gases to form a substantially homogenous mixture; substantially sealing said exhaust port from said combustion chamber; adding heat to said combustion chamber by raising said first combustion chamber pressure to a second combustion chamber pressure substantially higher than said first combustion chamber pressure; transferring a second quantity of fuel to said combustion chamber, substantially combusting said first and second quantities of fuel with said heat to form second post-combustion gases; exhausting said second post-combustion gases through said exhaust port.