EP0169481A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Throttle valve assembly
Assignee: Hitachi Ltd
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Filing: 1985-07-16
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Granted: —
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Expires: 2005-07-16
Abstract
Abstract A throttle valve assembly having a throttle valve (18) in an air passageway (12) and a fuel injection valve (14) supported by a support arm (16) in the air passageway in a position upstream of the throttle valve, the support arm splitting the air passageway into two portions (32, 34). A bypass passageway (22) having a thermal type air flowmeter (28) mounted therein has an inlet (24) opening in the air passageway in a position upstream of the fuel injection valve, and outlets (26A. 26B) opening in the two portions (32, 34) of the splitted air passageway, respectively, whereby a correct value of the flow rate of air flowing through the air passageway can be measured.
Inventors
- 👤 Yoshiyuki Tanabe
- 👤 Mineo Kashiwaya
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 07:34
CPC Classifications
F; F02; F02D; F02D9/00; F02M; F02M69/00; F02M69/04; F02M69/042; F02M69/043; F02M69/46
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
206 words
A throttle valve assembly comprising: a main body (1,0) having an-air passageway (12) formed therein; a throttle valve (18) fixed to a throttle valve stem (20) arranged in said air passageway in such a manner as to extend substantially at a right angle to an air flow through said air passageway; a fuel injection valve (14) arranged in said air passageway in a position upstream of said throttle valve; a support arm (16) supporting said fuel injection valve; a bypass passageway (22) having an inlet (24) opening in said air passageway in a position upstream of said fuel injection valve and an outlet (26A) opening in an annular gap defined between said fuel injection valve and a wall of said air passageway; and a thermal type air flowmeter (28) located midway in said bypass passageway, characterized in that said air passageway (12) is splitted into two portions (32, 34) by said support arm (16) in the vicinity of said fuel injection valve (14), and said outlet (26A) is positioned to open in one (32) of said two portions of the splitted air passageway, and said bypass passageway (22) has another outlet (26B) opening in the other (34) of said two portions of the splitted air passageway.
Claim 2
Dependent Claim
206 words
A throttle valve assembly comprising: a main body (1,0) having an-air passageway (12) formed therein; a throttle valve (18) fixed to a throttle valve stem (20) arranged in said air passageway in such a manner as to extend substantially at a right angle to an air flow through said air passageway; a fuel injection valve (14) arranged in said air passageway in a position upstream of said throttle valve; a support arm (16) supporting said fuel injection valve; a bypass passageway (22) having an inlet (24) opening in said air passageway in a position upstream of said fuel injection valve and an outlet (26A) opening in an annular gap defined between said fuel injection valve and a wall of said air passageway; and a thermal type air flowmeter (28) located midway in said bypass passageway, characterized in that said air passageway (12) is splitted into two portions (32, 34) by said support arm (16) in the vicinity of said fuel injection valve (14), and said outlet (26A) is positioned to open in one (32) of said two portions of the splitted air passageway, and said bypass passageway (22) has another outlet (26B) opening in the other (34) of said two portions of the splitted air passageway.
Claim 3
Dependent Claim
49 words
A throttle valve assembly as claimed in claim 1, characterized in that said support arm (16) and said throttle valve stem (20) are superposed one above another so as to vertically align with each other as viewed in a direction of the air flow through said air passageway (12).
Claim 4
Dependent Claim
47 words
A throttle valve assembly as claimed in claim 1, characterized in that said outlets (26A, 26B) of said bypass passageway (22) opening in said two portions (32, 34) of the air passageway (12), respectively, are located symmetrically with respect to the axis of said support arm (16).
Claim 5
Dependent Claim
23 words
A throttle valve assembly as claimed in claim 1, characterized in that said bypass passageway (22) is formed in said main body (10).
References Cited (Backward Citations)
No citation records indexed.
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