Throttle body and engine of motorcycle having throttle body
First Claim
1. A throttle body configured to supply air to an air-intake port of an engine, comprising:
- an air-intake passage through which air flows, the air-intake passage at least partially having a non-perfect circle portion with a cross-section of a non-perfect circle shape in a direction substantially perpendicular to a direction of an air flow of air taken in from outside, the non-perfect circle shape having long and short axes, the short axis extending in a width direction of the throttle body; and
at least one of a first throttle valve and a second throttle valve which are mounted within the non-perfect circle portion of the air-intake passage and include throttle valve members each having a shape conforming to the non-perfect circle shape of the cross-section of the non-perfect circle portion of the air-intake passage, the first throttle valve and the second throttle valve being each configured to control an amount of the air flow;
wherein the at least one of the first throttle valve and the second throttle valve is configured to be opened and closed to substantially open and close the air-intake passage.
3 Assignments
0 Petitions
Accused Products
Abstract
A throttle body configured to supply air to an air-intake port of an engine is disclosed. The throttle body typically includes an air-intake passage through which air flows. The air-intake passage at least partially has a non-perfect circle portion with a cross-section of a non-perfect circle shape in a direction substantially perpendicular to a direction of an air flow of air taken in from outside. The non-perfect circle shape typically has long and short axes. At least one of a first throttle valve and a second throttle valve typically is mounted within the non-perfect circle portion of the air-intake passage. The first throttle valve and second throttle valve may include throttle valve members each having a shape conforming to the non-perfect circle shape of the cross-section of the non-perfect circle portion of the air-intake passage. Typically, the first throttle valve and the second throttle valve are each configured to control an amount of the air flow. At least one of the first throttle valve and the second throttle valve is configured to open and close to substantially open and close the air-intake passage.
-
Citations
11 Claims
-
1. A throttle body configured to supply air to an air-intake port of an engine, comprising:
-
an air-intake passage through which air flows, the air-intake passage at least partially having a non-perfect circle portion with a cross-section of a non-perfect circle shape in a direction substantially perpendicular to a direction of an air flow of air taken in from outside, the non-perfect circle shape having long and short axes, the short axis extending in a width direction of the throttle body; and
at least one of a first throttle valve and a second throttle valve which are mounted within the non-perfect circle portion of the air-intake passage and include throttle valve members each having a shape conforming to the non-perfect circle shape of the cross-section of the non-perfect circle portion of the air-intake passage, the first throttle valve and the second throttle valve being each configured to control an amount of the air flow;
wherein the at least one of the first throttle valve and the second throttle valve is configured to be opened and closed to substantially open and close the air-intake passage. - View Dependent Claims (2)
-
-
3. A throttle body configured to supply air to an air-intake port of an engine, comprising:
-
an air-intake passage through which the air flows, the air-intake passage being configured to extend within the throttle body;
a main throttle valve member pivotally mounted within the air-intake passage and attached to a main throttle valve shaft;
a sub-throttle valve member that is pivotally mounted within a region of the air-intake passage which is located upstream of the main throttle valve member and that is attached to a sub-throttle valve shaft, the sub-throttle valve member being configured to be driven by a motor;
wherein the region of the air-intake passage which is located upstream of the main throttle valve member has a substantially oval shape having long and short axes or a substantially elongated circle shape having long and short axes, the short axis extending to conform to an axis of the sub-throttle valve shaft and the long axis extending in a direction substantially perpendicular to the axis of the sub-throttle valve shaft.
-
-
4. An engine of a motorcycle comprising:
-
a cylinder having a cylinder head;
an intake passage formed within the cylinder head;
a throttle body disposed upstream of the intake passage in an air flow of air taken in from outside, the throttle body including;
an air-intake passage through which air flows, the air-intake passage at least partially having a non-perfect circle portion with a cross-section of a non-perfect circle shape in a direction substantially perpendicular to a direction of the air flow, the non-perfect circle shape having long and short axes, the short axis extending in a width direction of the throttle body; and
a first throttle valve or a second throttle valve, or the first and the second throttle valves which are mounted within the non-perfect circle portion of the air-intake passage and include throttle valve members each having a shape conforming to the non-perfect circle shape of the cross-section of the non-perfect circle portion of the air-intake passage, the first throttle valve and the second throttle valve being each configured to control an amount of the air flow;
wherein the at least one of the first throttle valve and the second throttle valve is configured to be opened and closed to substantially open and close the air-intake passage. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
-
Specification