EP0137393A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Intake arrangement for internal combustion engine
Assignee: Mazda Motor Corp
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Filing: 1984-09-24
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Granted: —
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Expires: 2004-09-24
Abstract
Abstract An intake arrangement for an internal combustion engine (E), including a plurality of intake ports (4, 5) opening into a combustion chamber (2), a plurality of intake valves for opening and closing the intake ports (4, 5), respectively, a main intake passage (7) having a plurality of branch intake passages (10, 11) connected to the intake ports (4, 5), respectively, a shutter valve (12) for opening and closing the main intake passage (7), and an auxiliary intake passage (13) branched from the main intake passage (7) and connected to one (4) of the intake ports (4, 5).
Inventors
- 👤 Koichi Hatamura
- 👤 Koji Asanomi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 03:19
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4214; F02B; F02B31/00; F02B31/08; F02B31/085; F02B1/00; F02B1/02; F02B1/04; F02B2275/00; F02B2275/20; F02F2001/244; F02F2001/245; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
211 words
An intake arrangement for an internal combustion engine (E) having a combustion chamber (2), characterized by a plurality of intake ports (4, 5) for supplying intake gases into said combustion chamber (2), which open into said combustion chamber (2); a plurality of intake valves (15) for opening and closing said intake ports (4, 5), respectively; a main intake passage (7); a shutter valve (12) for opening and closing said main intake passage (7), which is provided in said main intake passage (7); said shutter valve (12) being adapted to be held in a closed state when the amount of the intake gases is small and to be opened when the amount of the intake gases is increased; said main intake passage (7) being branched, at a branch point (9) disposed downstream of said shutter valve (12), into a plurality of branch intake passages (10, 11) such that said branch intake passages (10, 11) are, respectively, connected to said intake ports (4, 5); and an auxiliary intake passage (13) having an inlet port (13a) and an outlet port (13b), which is branched, at said inlet port (13a), from said main intake passage (7) so as to be connected, at said outlet port (13b), to one (4) of said intake ports (4, 5).
Claim 2
Dependent Claim
211 words
An intake arrangement for an internal combustion engine (E) having a combustion chamber (2), characterized by a plurality of intake ports (4, 5) for supplying intake gases into said combustion chamber (2), which open into said combustion chamber (2); a plurality of intake valves (15) for opening and closing said intake ports (4, 5), respectively; a main intake passage (7); a shutter valve (12) for opening and closing said main intake passage (7), which is provided in said main intake passage (7); said shutter valve (12) being adapted to be held in a closed state when the amount of the intake gases is small and to be opened when the amount of the intake gases is increased; said main intake passage (7) being branched, at a branch point (9) disposed downstream of said shutter valve (12), into a plurality of branch intake passages (10, 11) such that said branch intake passages (10, 11) are, respectively, connected to said intake ports (4, 5); and an auxiliary intake passage (13) having an inlet port (13a) and an outlet port (13b), which is branched, at said inlet port (13a), from said main intake passage (7) so as to be connected, at said outlet port (13b), to one (4) of said intake ports (4, 5).
Claim 3
Dependent Claim
57 words
An intake arrangement as claimed in Claim 1, wherein said inlet port (13a) is disposed at an opposite side (5) of said one (4) of said intake ports (4, 5) with respect to an axis (L') of said main intake passage (7) as observed from an axial direction of a cylinder (1) defining said combustion chamber (2).
Claim 4
Dependent Claim
21 words
An intake arrangement as claimed in Claim 2, wherein said outlet port (13b) is disposed downstream of said branch point (9).
Claim 5
Dependent Claim
64 words
An intake arrangement as claimed in Claim 3, wherein a centerline (L) of said intake ports (4, 5) extends in parallel with said axis (L') of said main intake passage (7) such that said axis (L') of said main intake passage (7) is deviated from said centerline (L) of said intake ports (4, 5) towards said one (4) of said intake ports (4, 5).
Claim 6
Dependent Claim
87 words
An intake arrangement as claimed in Claim 4, further including a fuel injector (17) for injecting fuel into said main intake passage (7), said fuel injector (17) being provided with a fuel injection port (18) such that said fuel injection port (18) is disposed, downstream of said shutter valve (12), in said main intake passage (7), thereby to supply the fuel into said main intake passage (7) at the downstream side of said shutter valve (12) from said fuel injector (17) through said fuel injection port (18).
Claim 7
Dependent Claim
40 words
An intake arrangement as claimed in Claim 5, wherein said fuel injection port (18) is disposed at a position deviated from said centerline (L) of said intake ports (4, 5) towards said one (4) of said intake ports (4, 5).
Claim 8
Dependent Claim
12 words
An intake arrangement as claimed in Claim 4, further including a carburettor.
Claim 9
Dependent Claim
21 words
An intake arrangement as claimed in Claim 1, wherein said outlet port (13b) is disposed downstream of said branch point (9).
Claim 10
Dependent Claim
64 words
An intake arrangement as claimed in Claim 1, wherein a centerline (L) of said intake ports (4, 5) extends in parallel with an axis (L') of said main intake passage (7) such that said axis (L') of said main intake passage (7) is deviated from said centerline (L) of said intake ports (4, 5) towards said one (4) of said intake ports (4, 5).
Claim 11
Dependent Claim
87 words
An intake arrangement as claimed in Claim 1, further including a fuel injector (17) for injecting fuel into said main intake passage (7), said fuel injector (17) being provided with a fuel injection port (18) such that said fuel injection port (18) is disposed, downstream of said shutter valve (12), in said main intake passage (7), thereby to supply the fuel into said main intake passage (7) at the downstream side of said shutter valve (12) from said fuel injector (17) through said fuel injection port (18).
References Cited (Backward Citations)
No citation records indexed.
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