Multiple throttle apparatus
First Claim
1. A multiple throttle apparatus, comprising:
- a plurality of throttle valves respectively disposed at each air intake passage corresponding to each cylinder of an engine, a throttle shaft supporting to open and close said plurality of throttle valves, and a drive unit to rotate said throttle shaft, wherein said plurality of throttle valves are separated into a plurality of groups, wherein said throttle shaft includes a plurality of throttle shafts disposed in a line while supporting said throttle valves for each group, and wherein said drive unit includes a plurality of drive units being disposed to exert drive force to the inner end portion of the side where said plurality of throttle shafts face each other.
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Accused Products
Abstract
A multiple throttle apparatus has a plurality of throttle valves respectively disposed at each air intake passage corresponding to each cylinder of an engine, a plurality of throttle shafts to support the plurality of throttle valves for each group, and a plurality of drive elements to respectively drive the throttle shafts. With this structure, open-close control of one group of the throttle valves and of the other group of throttle valves can be performed separately. Therefore, the combustion condition, namely the power, can adequately be controlled in accordance with the driving conditions, and fine control, even to perform ISC, is possible. In this manner, it becomes possible to obtain electronic control and fine control to a multiple throttle apparatus of an engine mounted on a motorcycle.
30 Citations
18 Claims
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1. A multiple throttle apparatus, comprising:
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a plurality of throttle valves respectively disposed at each air intake passage corresponding to each cylinder of an engine, a throttle shaft supporting to open and close said plurality of throttle valves, and a drive unit to rotate said throttle shaft, wherein said plurality of throttle valves are separated into a plurality of groups, wherein said throttle shaft includes a plurality of throttle shafts disposed in a line while supporting said throttle valves for each group, and wherein said drive unit includes a plurality of drive units being disposed to exert drive force to the inner end portion of the side where said plurality of throttle shafts face each other. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A multiple throttle apparatus, comprising:
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a plurality of throttle valves respectively disposed at each air intake passage corresponding to each cylinder of an engine, a throttle shaft supporting to open and close said plurality of throttle valves, and a drive unit to rotate said throttle shaft, wherein said plurality of throttle valves are separated into a plurality of groups, wherein said throttle shaft includes a plurality of throttle shafts disposed in parallel while supporting said throttle valves for each group, wherein said drive unit includes a plurality of drive units to exert drive force to each of said plurality of throttle shafts, and wherein one drive unit of said plurality of drive units is disposed to exert drive force to an end portion of one throttle shaft at one end side of two adjacent throttle shafts of said plurality of throttle shafts, and another drive unit of said plurality of drive units is disposed to exert drive force to an end portion of the other throttle shaft at the other end side of the two adjacent throttle shafts of said plurality of throttle shafts. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A multiple throttle apparatus, comprising:
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a plurality of throttle valves respectively disposed at each air intake passage corresponding to each cylinder of an engine and separated into a plurality of groups of throttle valves;
a plurality of throttle shafts disposed either in a line or in parallel while supporting to open and close said plurality of throttle valves for each group; and
a plurality of drive units to exert a drive force to each of said plurality of throttle shafts and separately controlled in accordance with driving conditions of the engine comprising at least a normal engine operating condition, a non-normal engine operating condition, an abrupt acceleration condition, an abrupt deceleration condition, or an idle speed control condition, or combinations thereof. - View Dependent Claims (15, 16, 17, 18)
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Specification