US4840159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus from controlling amount of intake air to engine
Assignee: Mitsubishi Electric Corp
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Filing: 1988-02-26
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Granted: 1989-06-20
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Expires: 2008-02-26
Abstract
Abstract An apparatus for controlling the amount of intake air to an engine comprises a throttle body, a throttle valve disposed in the body, a bypass passage that bypasses the throttle valve. The throttle body forms a part of the air intake passage for the engine. In one embodiment of the invention, a guide passage is formed in the throttle body and extends upwardly from the bypass passage. The open end of the guide passage is disposed above the center line of the inside of the throttle body. In another embodiment of the invention, a barrier such as a protrusion or groove is formed in the inner surface of the throttle body and disposed above the open end of the bypass passage to prevent fuel, oil, and other substances from flowing into the bypass passage.
Inventors
- 👤 Osamu Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:30
CPC Classifications
F; F02; F02D; F02D33/00; F02M; F02M29/00; F02M29/14; F02D9/00; F02D9/02; F02M3/00; F02M3/06; F02M3/07; F02M3/075
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
An apparatus for controlling the amount of intake air to an engine, comprising: a throttle body forming a part of an air intake passage for said engine, said throttle body being oriented so that the inside of said throttle body defines a horizontal passage; a throttle valve disposed in said throttle body; a second valve coupled to the bottom of said throttle body and acting to control the amount of auxiliary air flowing through a bypass passage which bypasses said throttle valve; and at least one guide passage formed in said throttle body and connected with said bypass passage, said guide passage having an open end in said horizontal passage disposed above the center line of said horizontal passage.
Claim 2
Independent Claim
119 words
An apparatus for controlling the amount of intake air to an engine, comprising: a throttle body forming a part of an air intake passage for said engine, said throttle body being oriented so that the inside of said throttle body defines a horizontal passage; a throttle valve disposed in said throttle body; a second valve coupled to the bottom of said throttle body and acting to control the amount of auxiliary air flowing through a bypass passage which bypasses said throttle valve; and at least one guide passage formed in said throttle body and connected with said bypass passage, said guide passage having an open end in said horizontal passage disposed above the center line of said horizontal passage.
Claim 3
Independent Claim
140 words
An apparatus for controlling the amount of intake air to an engine, comprising: a throttle body forming a part of an air intake passage for said engine; a throttle valve disposed in said throttle body; a bypass passage which bypasses said throttle valve and supplies auxiliary air, at least one open end of said bypass passage being located at the bottom of said throttle body, and disposed upstream relative to the flow of said air from said throttle valve; a second valve for controlling the amount of auxiliary air flowing through said bypass passage; and at least one barrier formed on the inner surface of said throttle body and disposed above said open end of said bypass passage to prevent fuel, oil, and other substances adhering to the inner surface of said throttle body from flowing into said bypass passage.
Claim 4
Independent Claim
140 words
An apparatus for controlling the amount of intake air to an engine, comprising: a throttle body forming a part of an air intake passage for said engine; a throttle valve disposed in said throttle body; a bypass passage which bypasses said throttle valve and supplies auxiliary air, at least one open end of said bypass passage being located at the bottom of said throttle body, and disposed upstream relative to the flow of said air from said throttle valve; a second valve for controlling the amount of auxiliary air flowing through said bypass passage; and at least one barrier formed on the inner surface of said throttle body and disposed above said open end of said bypass passage to prevent fuel, oil, and other substances adhering to the inner surface of said throttle body from flowing into said bypass passage.
Claim 5
Dependent Claim
17 words
An apparatus as claimed in claim 2, wherein said barrier is a protrusion surrounding said open end.
Claim 6
Independent Claim
141 words
An apparatus for controlling the amount of intake air to an engine, comprising: a throttle body forming a part of an air intake passage for said engine; a throttle valve disposed in said throttle body; a bypass passage which bypasses said throttle valve and supplies auxiliary air, at least one open end of the bypass passage being located at the bottom of said throttle body; a second valve for controlling the amount of auxiliary air flowing through said bypass passage; and at least one barrier formed on the inner surface of said throttle body and disposed above said open end of said bypass passage to prevent fuel, oil, and other substances adhering to the inner surface of said throttle body from flowing into said bypass passage, wherein said barrier is a groove consisting of a horizontal wall and a vertical wall.
Claim 7
Independent Claim
141 words
An apparatus for controlling the amount of intake air to an engine, comprising: a throttle body forming a part of an air intake passage for said engine; a throttle valve disposed in said throttle body; a bypass passage which bypasses said throttle valve and supplies auxiliary air, at least one open end of the bypass passage being located at the bottom of said throttle body; a second valve for controlling the amount of auxiliary air flowing through said bypass passage; and at least one barrier formed on the inner surface of said throttle body and disposed above said open end of said bypass passage to prevent fuel, oil, and other substances adhering to the inner surface of said throttle body from flowing into said bypass passage, wherein said barrier is a groove consisting of a horizontal wall and a vertical wall.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-19 | 1992-12-19 | 1993-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-19 | 1996-12-19 | 1997-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-19 | 2000-12-19 | 2001-06-20 | $7700.00 | Window Closed / Lapsed |