Intake apparatus of internal combustion engine

• US 5,860,405 A
• Filed: 02/27/1997
• Issued: 01/19/1999
• Est. Priority Date: 02/28/1996
• Status: Expired due to Term

• Current Assignee: Suzuki Kabushiki Kaisha
• Original Assignee: Suzuki Kabushiki Kaisha
• Inventors: Sonoda, Yuji, Nojima, Tetsuo, Muramatsu, Tatsuhiro
• Primary Examiner(s): VO, HIEU T
• Application Number:
  US08/806,721
• Time in Patent Office: 691 Days
• Field of Search: 123/422, 123/339
• US Class Current: 477/111
• CPC Class Codes: F02B 61/02 for driving cycles
• CPC Class Codes: F02B 61/06 Combinations of engines with mechanical gearing F02B61/02, F02B61/04 take precedence
• CPC Class Codes: F02D 29/02 peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
• CPC Class Codes: F02D 9/02 concerning induction conduits throttle valves, or arrangements thereof in conduits F02D9/08
• CPC Class Codes: F02P 5/1504 with particular means during a transient phase, e.g. acceleration, deceleration, gear change during starting F02P5/1506
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

An intake apparatus of an internal combustion engine for a vehicle comprises a duct for taking into a wind during a running of a vehicle, an air cleaner operatively connected to the duct, a fuel supply device for injecting a fuel into an intake air coming from the air cleaner, a movable valve arranged between an outlet port of the duct and an inlet port of the air cleaner, a negative-pressure motor for driving the movable valve, and an electronic control unit for controlling the movable valve. The electronic control unit is connected to an ignition means, and the electronic control unit controls the opening and closing of the movable valve in accordance with a rotational speed of an internal combustion engine, an opening degree of a throttle of the engine and a gear position of the engine as control parameters and carries out a delay angular control of an ignition timing in response to the opening and closing control of the movable valve.

Claims

1. An intake apparatus of an internal combustion engine for a vehicle comprising:

a duct for taking into a wind during a running of a vehicle;

an air cleaner operatively connected to the duct;

a fuel supply device for injecting a fuel into an intake air coming from the air cleaner;

a movable valve arranged between an outlet port of the duct and an inlet port of the air cleaner;

a negative-pressure motor for driving the movable valve; and

an electronic control unit for controlling the movable valve, said electronic control unit being connected to an ignition means,

wherein said electronic control unit controls the opening and closing of the movable valve in accordance with a rotational speed of an internal combustion engine, an opening degree of a throttle of the engine and a gear position of the engine as control parameters and carries out a delay angular control of an ignition timing in response to the opening and closing control of the movable valve.

2. An intake apparatus according to claim 1, wherein said movable valve is supported in a chamber formed to a lower surface portion of the air cleaner.

3. An intake apparatus according to claim 2, wherein said negative-pressure motor comprises a diaphragm which is mounted to a bottom portion of the chamber.

4. An intake apparatus according to claim 3, wherein said chamber is formed from a case body and said air cleaner has a case body to which the case body of the chamber is integrated so that said negative-pressure motor and said movable valve are integrated with the case body of the air cleaner.

5. An intake apparatus according to claim 1, wherein the internal combustion engine is provided with a rotational speed sensor, a throttle sensor and a gear position sensor and wherein said electronic control unit is inputted with the rotational speed of an internal combustion engine from the rotational speed sensor, the opening degree of a throttle from the throttle sensor and the gear position from the gear position sensor.

6. An intake apparatus according to claim 5, wherein said electronic control unit is a central processing unit.