2results about "Valve control" patented technology

To provide a device improving the startability of an internal combustion engine.SOLUTION: An internal combustion engine is equipped with a crank shaft 31, a first cylinder 7 and a second cylinder 8, and a decompression device that decompresses the first cylinder and the second cylinder after rotation starting and increases the decompression amount of the second cylinder as compared with the decompression amount of the first cylinder. A plurality of valves is provided, which opens and intercepts combustion chambers of the first cylinder and the second cylinder to the outside. The decompression device, in a compression stroke of the internal combustion engine, drives the plurality of valves so as to increase an opening period of the second cylinder, as compared with an opening period of the first cylinder.SELECTED DRAWING: Figure 1

There is provided an internal combustion engine (E) including: a crankshaft (31); a first cylinder (7) and a second cylinder (8); and a decompression device (9) configured to reduce the pressures inside the first cylinder and the second cylinder at a time when the internal combustion engine starts to rotationally drive as compared with the pressures inside the first cylinder and the second cylinder at a time after the internal combustion engine starts to rotationally drive. The decompression device is configured such that, at the time when the internal combustion engine starts to rotationally drive, a decompression amount in the second cylinder is greater than a decompression amount in the first cylinder.