EP0317093A2
Expired / Lapsed
EP
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Air intake system adapted for motor bicycle engine
Assignee: Suzuki Motor Corp
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Filing: 1988-10-26
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Granted: —
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Expires: 2008-10-26
Abstract
Abstract An air intake system adapted for a motor bicycle engine (15) generally comprises an air cleaner (17), a plurality of intake tubes (18a, 18b) connected to the air cleaner, and a plurality of carburetors (19a, 19b) connected to the intake tubes at angles different from each other with respect to the air cleaner. The intake tubes have lengths equal to each other and the carburetors have substantially the same outer configuration. The inner space of the air cleaner is divided into a dust side and a clean side which is also divided into a plurality of sections connected to the cylinders for the engine through the intake tubes and the carburetors, respectively. The motor bicycle is generally provided with a cowling covering the front portion of the motor bicycle body and the cowling (113) is provided with an air inlet port (117), a first duct (118) secured to an inside surface of the cowling and a second duct (120) secured to and along a frame member (103) of the motor bicycle. The second duct has an upstream end communicated with the downstream end of the first duct and a downstream end opened towards an inlet of an air cleaner.
Inventors
- 👤 Ryuichi Inaba
- 👤 Michio Nagayoshi
- 👤 Atsuo Urabe
- 👤 Yutaka Nitta
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 00:03
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/10006; F02M35/10013; B; B60; B60K; B60K13/00; B60K13/02; B62; B62J; B62J17/00; B62J17/10; B62J40/00; B62J40/10; B62K; B62K11/00; B62K11/02; B62K11/04; F02B; F02B61/00; F02B61/02; F02M35/16; F02M35/162; F02M35/02; F02M35/10091; F02M35/10137; F02M35/1015; F02M35/10183; F02M35/1019; F02M35/104; F02M35/116; F05; F05C; F05C2225/00; F05C2225/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
155 words
An air intake system adapted for a motor bicycle engine characterized by an air cleaner (17) for removing a foreign material such as dust contained in an air taken in, a plurality of intake tubes (18a, 18b) connected to said air cleaner (17) for feeding a clean air from said air cleaner, and a plurality of carburetors (19a, 19b) connected to said intake tubes (18a, 18b) respectively in which the clean air is mixed with a fuel, said carburetors (19a, 19b) being connected at angles different from each other with respect to said air cleaner (17), the air-fuel mixture being fed into an engine (15) and characterized in that said intake tubes (18a, 18b) have lengths substantially equal to each other, said carburetors (19a, 19b) have substantially the same outer configuration and said air cleaner (17) is constructed to have a shape for absorbing the difference of the attachment angles of said carburetors (19a, 19b).
Claim 2
Dependent Claim
155 words
An air intake system adapted for a motor bicycle engine characterized by an air cleaner (17) for removing a foreign material such as dust contained in an air taken in, a plurality of intake tubes (18a, 18b) connected to said air cleaner (17) for feeding a clean air from said air cleaner, and a plurality of carburetors (19a, 19b) connected to said intake tubes (18a, 18b) respectively in which the clean air is mixed with a fuel, said carburetors (19a, 19b) being connected at angles different from each other with respect to said air cleaner (17), the air-fuel mixture being fed into an engine (15) and characterized in that said intake tubes (18a, 18b) have lengths substantially equal to each other, said carburetors (19a, 19b) have substantially the same outer configuration and said air cleaner (17) is constructed to have a shape for absorbing the difference of the attachment angles of said carburetors (19a, 19b).
Claim 3
Dependent Claim
35 words
The air intake system according to claim 1 wherein said carburetors (19a, 19b) have central axes (C, D) respectively normal to surfaces (A, D) of said air cleaner (17) to which said carburetors are attached.
Claim 4
Dependent Claim
103 words
The air intake system according to claim 1 wherein said air cleaner (17) is provided with an air cleaner body (13) which is divided into a dust side chamber (33) and a clean side chamber (34) by means of a filter (32), said clean side chamber (34) being divided into a plurality of clean side sections (29a, 29b) by partition means (28) so as to have inner volumes substantially equal to each other and said clean side sections (29a, 29b) are connected respectively to corresponding cylinders (15a, 15b) for the engine (15) through the intake tubes (18a, 18b) and the carburetors (19a, 19b).
Claim 5
Dependent Claim
30 words
The air intake system according to claim 3 wherein said clean side chamber (34) is divided into two clean side sections (29a, 29b) by means of a partition wall (28).
Claim 6
Dependent Claim
120 words
An air intake system adapted for an engine of a motor bicycle of the type provided with a cowling which covers a front side of a motor bicycle body characterized in that the cowling (113) is provided with an air inlet port (117) for taking wind generated due to running of the motor bicycle, a first duct (118) is secured to an inside surface of said cowling (113) behind said air inlet port (117), and a second duct (120) is secured to and along a frame member (103), said second duct (120) having an upstream end communicated with the downstream end of said first duct (118) and a downstream end opened towards an inlet (110) of an air cleaner (109).
Claim 7
Dependent Claim
120 words
An air intake system adapted for an engine of a motor bicycle of the type provided with a cowling which covers a front side of a motor bicycle body characterized in that the cowling (113) is provided with an air inlet port (117) for taking wind generated due to running of the motor bicycle, a first duct (118) is secured to an inside surface of said cowling (113) behind said air inlet port (117), and a second duct (120) is secured to and along a frame member (103), said second duct (120) having an upstream end communicated with the downstream end of said first duct (118) and a downstream end opened towards an inlet (110) of an air cleaner (109).
Claim 8
Dependent Claim
29 words
The air intake system according to claim 5 wherein said first duct (118) is made of a rubber and said second duct (120) is made of a synthetic resin.
Claim 9
Dependent Claim
37 words
The air intake system according to claim 5 wherein said air inlet port (117) is provided with a front half portion (115) in a form of an inside concave and a rear half portion (116) expanding outwardly.
References Cited (Backward Citations)
No citation records indexed.
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