Operation control apparatus for planing boat

• US 7,549,900 B2
• Filed: 05/25/2007
• Issued: 06/23/2009
• Est. Priority Date: 05/26/2006
• Status: Active Grant

• Current Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Yamaha Corporation)
• Original Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Yamaha Corporation)
• Inventors: Suzuki, Masaru, Hattori, Toshiyuki, Fujino, Kenichi, Yoshida, Tatsuya, Kinoshita, Yoshimasa, Takashima, Sumihiro
• Primary Examiner(s): AVILA, STEPHEN P
• Application Number:
  US11/754,207
• Publication Number:
  US 20070293103A1
• Time in Patent Office: 760 Days
• Field of Search: 440/1
• US Class Current: 440/1
• CPC Class Codes: B63B 34/10 Power-driven personal watercraft, e.g. water scooters water jet propulsion B63H11/00; jet steering B63H25/46; Accessories therefor
• CPC Class Codes: B63H 21/21 Control means for engine or transmission, specially adapted for use on marine vessels
• CPC Class Codes: B63H 21/213 Levers or the like for controlling the engine or the transmission, e.g. single hand control levers
• CPC Class Codes: F02D 11/02 characterised by hand, foot, or like operator controlled initiation means
• CPC Class Codes: F02D 31/001 Electric control of rotation speed

Abstract

An operating state determining device can determine whether or not an engine is in a certain operating state. A mode setting device can disable mode setting into a speed setting mode if a certain operating state of the engine has been determined, and can enable mode setting into the speed setting mode if the engine is not in the operating state.

Claims

1. An operation control apparatus for a planing boat, comprising:

an engine;

a throttle valve configured to adjust an amount of airflow to the engine;

an accelerator configured to allow an operator to control an opening of the throttle valve;

a mode setting device configured to selectively set one of a normal driving mode and a speed setting mode, wherein the normal driving mode enables the boat to run at a speed in response to an operation amount of the accelerator and the speed setting mode enables the boat to run at a certain speed when a speed setting operating element has been operated; and

an operating state determining device comprising a planing state determining device configured to determine whether or not the planing boat is in a planing state;

wherein the mode setting device is configured to disable and enable mode setting into the speed setting mode depending on whether or not the planing boat is in the planing state.

2. The operation control apparatus for a planing boat according to claim 1, wherein the operating state determining device comprises an engine speed detecting device configured to detect a speed of the engine, the operating state determining device being configured to determine that the engine is in a certain operating state if the detected engine speed is larger than a preset upper limit rotational speed, wherein the mode setting device is configured to disable mode setting into the speed setting mode if the certain operating state of the engine has been determined.

3. The operation control apparatus for a planing boat according to claim 1, wherein the operating state determining device comprises an accelerator operation amount detecting device configured to detect an operation amount of the accelerator, the operating state determining device being configured to determine that the engine is in a certain operating state if the detected accelerator operation amount is larger than a preset upper limit operation amount, wherein the mode setting device is configured to disable mode setting into the speed setting mode if the certain operating state of the engine has been determined.

4. The operation control apparatus for a planing boat according to claim 1, wherein the operating state determining device comprises a throttle opening detecting device configured to detect an opening amount of the throttle valve, the operating state determining device being configured to determine that the engine is in a certain operating state if the detected throttle opening is larger than a preset upper limit opening, wherein the mode setting device is configured to disable mode setting into the speed setting mode if the certain operating state of the engine has been determined.

5. The operation control apparatus for a planing boat according to claim 1, wherein the operating state determining device comprises an engine speed detecting device configured to detect the speed of the engine and an accelerator operation amount detecting device configured to detect the operation amount of the accelerator, wherein the operating state determining device is configured to determine that the engine is in a certain operating state if at least one of the detected engine speed is larger than a preset upper limit rotational speed and the detected accelerator operation amount is larger than a preset upper limit operation amount, wherein the mode setting device is configured to disable mode setting into the speed setting mode if the certain operating state of the engine has been determined.

6. The operation control apparatus for a planing boat according to claim 1, wherein the operating state determining device comprises an engine speed detecting device configured to for detect the speed of the engine, a throttle opening detecting device configured to detect the opening of the throttle valve, wherein the operating state determining device is configured to determine that the engine is in a certain operating state if at least one of the detected engine speed is larger than a preset upper limit rotational speed or if the detected throttle valve opening is larger than a preset upper limit opening, and wherein the mode setting device is configured to disable mode setting into the speed setting mode if the certain operating state of the engine has been determined.

7. An operation control apparatus for a planing boat, comprising:

an engine;

a throttle valve configured to adjust an amount of airflow to the engine;

an accelerator configured to allow an operator to control an opening of the throttle valve;

a mode setting device configured to selectively set one of a normal driving mode and a speed setting mode, wherein the normal driving mode enables the boat to run at a speed in response to an operation amount of the accelerator and the speed setting mode enables the boat to run at a certain speed when a speed setting operating element has been operated; and

an operating state determining device configured to determine whether or not the engine is in a certain operating state;

wherein the mode setting device is configured to disable mode setting into the speed setting mode if the certain operating state of the engine has been determined, and to enable mode setting into the speed setting mode if the engine is not in the certain operating state;

wherein the operation control apparatus further comprises a planing state determining device configured to determine whether or not a hull of the planing boat is in a planing state, wherein the mode setting device is configured to prevent mode setting into the speed setting mode if at least one of the hull is not in a planing state and the engine is in the certain operating state, mode setting device also being configured to and allow mode setting into the speed setting mode if the hull is in the planing state and the engine is not in the certain operating state.

8. The operation control apparatus for a planing boat according to claim 7, wherein the planing state determining device is configured to determine that the hull is not in a planing state if a moving average obtained using engine speeds continues to be smaller than a preset value for a preset period of time or longer.

9. The operation control apparatus for a planing boat according to claim 7, wherein the planing state determining device is configured to determine that the hull is not in the planing state if at least one of the engine speed continues to be smaller than a lower limit rotational speed, which is smaller than an upper limit rotational speed at which the certain operating state is determined, for a preset period of time or longer, and if a boat speed continues to be smaller than a preset lower limit running speed for a preset period of time or longer.

10. An operation control apparatus for a planing boat, comprising:

an engine;

a power output request device configured to allow an operator of the planing boat to issue a request for power from the engine;

a speed control mode input device configured to allow an operator of the boat to issue a speed control mode switching command for switching between a normal mode and a speed control mode;

a controller configured to control a power output of the engine based on the request from the power output request device, the controller operating the engine at a speed in response to the request from the power output request device in the normal mode and operating the engine at a speed chosen by the operator with the speed control mode input device;

a mode setting device configured to selectively set one of the normal mode and the speed setting mode based in part on the switching command, wherein the normal driving mode enables the boat to run at a speed in response to an operation amount of the accelerator and the speed setting mode enables the boat to run at a certain speed when a speed setting operating element has been operated; and

an operating state determining device configured to determine whether or not the planing boat is in a planing state;

wherein the mode setting device is configured to disable mode setting into the speed setting mode if the planing boat is not in the planing state, and to enable mode setting into the speed setting mode if the planing boat is in the planing state.

11. The operation control apparatus for a planing boat according to claim 10, wherein the mode setting device is configured to maintain the speed setting mode when the power output request device is adjusted within a range between a minimum power output request value and a maximum power output request value.