Small planing boat
First Claim
1. A small planing boat comprising:
- a multi-cylinder engine; and
a jet pump configured to be driven by the engine and to propel a hull by drawing in and jetting out water;
wherein the engine is configured to change the number of deactivated cylinders in a phased manner corresponding to a speed of the engine when the engine speed becomes a prescribed speed or more, the engine further comprising;
a memory device arranged to store a plurality of cylinder deactivation sequence schedules defining sequences of cylinders that are deactivated and increasing the number of deactivated cylinders in a phased manner, andan operation control device configured and programmed to deactivate the cylinders of the engine in a phased manner in accordance with the cylinder deactivation sequence schedule stored in the memory device, andwherein the operation control device is configured and programmed to shift the cylinder deactivation sequence schedule to be read out from the memory device to another cylinder deactivation sequence schedule corresponding to an operational state of the engine; and
wherein the operation control device is configured and programmed to store a newest cylinder deactivation sequence schedule while the engine is operated, and to shift a stored previous cylinder deactivation sequence schedule to another cylinder deactivation sequence schedule when the engine is restarted.
2 Assignments
0 Petitions
Accused Products
Abstract
A small planing boat includes a multi-cylinder engine, and a propulsion unit driven by the engine for propelling a hull by drawing up and jetting out water. The engine can be configured to change the number of deactivated cylinders in a phased manner corresponding to an engine speed when the engine speed becomes a prescribed speed or more, and can include a memory for storing cylinder deactivation sequence schedules for determining sequences of cylinders that are deactivated and increasing the number of deactivated cylinders in a phased manner. An operation control device configured to deactivate the cylinders of the engine in a phased manner in accordance with the cylinder deactivation sequence schedules stored in the memory. The operation control device shifts the cylinder deactivation sequence schedules to be read out from the memory to another cylinder deactivation sequence schedule corresponding to an operational state of the engine.
30 Citations
13 Claims
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1. A small planing boat comprising:
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a multi-cylinder engine; and a jet pump configured to be driven by the engine and to propel a hull by drawing in and jetting out water; wherein the engine is configured to change the number of deactivated cylinders in a phased manner corresponding to a speed of the engine when the engine speed becomes a prescribed speed or more, the engine further comprising; a memory device arranged to store a plurality of cylinder deactivation sequence schedules defining sequences of cylinders that are deactivated and increasing the number of deactivated cylinders in a phased manner, and an operation control device configured and programmed to deactivate the cylinders of the engine in a phased manner in accordance with the cylinder deactivation sequence schedule stored in the memory device, and wherein the operation control device is configured and programmed to shift the cylinder deactivation sequence schedule to be read out from the memory device to another cylinder deactivation sequence schedule corresponding to an operational state of the engine; and wherein the operation control device is configured and programmed to store a newest cylinder deactivation sequence schedule while the engine is operated, and to shift a stored previous cylinder deactivation sequence schedule to another cylinder deactivation sequence schedule when the engine is restarted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification