| 摘要 |
A device for splitting the operation of a multicylinder internal combustion engine to allow the use of one group of the cylinders during a first phase of operation and the use of both the first and second group of the cylinders during a second phase of operation. In the first phase of operation all fuel and air is blocked by a throttle valve from entering the inactive second group of cylinders, causing these cylinders to operate in a vacuum environment. The throttle controlling the second group of cylinders operates in response to the operation of a throttle controlling the first group of cylinders. In an alternative embodiment, the throttle of the second group of cylinders is kept slightly open during the first phase of operation to provide just enough fuel and air to the second group of cylinders to provide power to turn the pistons in the second group of cylinders and reduce the potential drag forces to the active first group of cylinders.
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