LandOfFree - US Patents - Listing for Internal-combustion engines,Four-cycle

Internal-combustion engines – Four-cycle – Variable clearance

Mechanical transmission device for engine with variable...

Internal-combustion engines – Four-cycle – Variable clearance

Method and a device for changing the compression ratio in an int

Internal-combustion engines – Four-cycle – Opposite supply and exhaust valves

Method and apparatus for controlling fuel injection valves in an

Internal-combustion engines – Four-cycle – Scavenging

Method and device for improving the efficiency of internal combu

Internal-combustion engines – Four-cycle – Variable clearance

Method and device for modifying the compression rate to...

Internal-combustion engines – Four-cycle – Variable clearance

Method and device for monitoring a variable cylinder...

Internal-combustion engines – Four-cycle – Variable clearance

Method and means for increasing the mean efficiency of an Otto c

Internal-combustion engines – Four-cycle – Multiple exhaust

Method for influencing the mixture formation and charging...

Internal-combustion engines – Four-cycle

Method of controlling the process of combustion in an...

Internal-combustion engines – Four-cycle – Having subcharger associated with the cylinder

Method of generating turbulence with intra-cycle cooling for spa

Internal-combustion engines – Four-cycle – Scavenging

Method of operating a two-stroke-cycle engine with variable valv

Internal-combustion engines – Four-cycle – Variable clearance

Method of operating an internal combustion engine during a combu

Internal-combustion engines – Four-cycle – Having subcharger associated with the cylinder

Method of pneumatic injection of fuel into a cylinder of a recip

Internal-combustion engines – Four-cycle – Single poppet valve

Method of producing a powerful and efficient internal...

Internal-combustion engines – Four-cycle – Variable clearance

Mixture-compressing, spark-ignited internal combustion engine ha

Internal-combustion engines – Four-cycle – Rotating valve

Modular rotary discoid valve assembly for engines and other appl

Internal-combustion engines – Four-cycle – Rotating valve

Modular rotary discoid valve assembly for engines and other appl

Internal-combustion engines – Four-cycle – Crankcase compression of air or combustible mixture to be...

Multi-cylinder engine of crankcase scavenging type for watercraf

Internal-combustion engines – Four-cycle – Variable clearance

Multi-cylinder engine with uniform cylinder sensitivity to knock