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US 8,434,454 B2Granted
Dual crankshaft engines
OwnerGile Jun Yang Parkinventor
Life of this patent
Estimating the term…
Abstract
Engine systems have two or more internal combustion power units. The units are connected to deliver power by way of freewheeling mechanisms so that one of the power units may be stopped or idled while one or more other power units continues to supply power. A control system is configured to shut an air shut off valve and/or disable an ignition and/or fuel injection system to shut down an auxiliary one of the power units.
Claims18
An engine system comprising:
- first and second internal combustion power units, each of the power units comprising:
- a crankshaft driven by at least one reciprocating piston;
- and
- an air intake system comprising an air shut off valve controlled by an actuator;
- and
- a freewheeling mechanism;
- a power transmission coupled to receive power from the power units by way of the freewheeling mechanism;
- a control system configured to close the air shut off valve on an auxiliary one of the first and second power units in response to a power demand being below a threshold.
5 more elements
A method for providing mechanical power to drive a load, the method comprising:
- providing a plurality of power units, each of the power units comprising:
- a crankshaft driven by at least one reciprocating piston;
- and
- an air intake system comprising an air shut off valve controlled by an actuator;
- and
- a freewheeling mechanism;
- delivering power to the load by way of a power transmission coupled to receive power from the power units by way of the freewheeling mechanisms;
- and
- in response to a power demand being below a threshold, automatically shutting down an auxiliary one of the first and second power units by closing the air shut-off valve of the auxiliary power unit.
6 more elements
Dependencies are inferred from the claim text.