Abstract:
Multiple intake valves operatively associated in a common combustion chamber are advantageous in that the design achieves high output for an internal combustion engine. The subject modified cylinder head utilizes the advantages available in a multiple intake valve system, but further enhances the design by reducing heat rejection. In the subject modified cylinder head, three intake valves (38, 40, 42) having corresponding intake valve ports (26, 28, 30) and one exhaust valve (68) having an exhaust valve port (66) are operatively associated in a common combustion chamber. A reduction in heat rejection is achieved through a relationship between the cross-sectional areas of the intake and exhaust valve ports (26, 28, 30, 66). The intake valve ports (26, 28, 30) are constructed so that their cross-sectional area is larger than about 69 % of the combined cross-sectional area of the intake and the exhaust ports (26, 28, 30, 66).
Abstract:
An internal combustion engine is configured with combustion chamber pressure sensing and exhaust gas recirculation apparatus. Fuel injection timing is adjusted based on combustion phasing and exhaust gas recirculation is controlled based on average fuel injection timing adjustments.
Abstract:
An engine is described having a combustion chamber with one or more intake ports and an injector for directing a spray or jet of fuel directly into the combustion chamber. The injector (60) is arranged in an injector chamber (54) distinct from the engine intake port or ports and separated from the combustion chamber by a poppet valve (56) that closes to isolate the injector (60) from the the combustion chamber during part of the engine operating cycle. The injector (60) is opened only at times that the poppet valve (56) is open and the spray of the injector is arranged to pass through the orifice of the open poppet valve (56) without wetting the walls of the injector chamber (54).
Abstract:
This invention relates to a method for controlling internal combustion engines for the control of combustion, the engine comprising at least one detonation sensor (20) and at least one mechanism (25) for altering the compression ratio of the engine, the method obtaining information from the detonation sensor (20) and sending this information to a storage unit (21) which compares the stored information with a database (22), the result of this comparison being sent to a processing unit (23), the processing unit (23) activating the mechanism (25) for altering the compression ratio of the engine in accordance with the degree of retardation or advance of an ignition point read by the sensor (20).
Abstract:
A method and device for controllably combusting combustible material, including a combustion device (10) comprising an elongate combustion tube (12) having an inlet section (14) including an inlet for combustible material, an ignition section (16), including an igniter (20) displaced along a length of the tube from the inlet section to ignite the combustible material, and at least one energy extraction device (32) operatively coupled to the combustion tube and configured to extract energy from combustion of the combustible mixture.