Control apparatus and control method for drive source

• US 7,983,826 B2
• Filed: 07/20/2009
• Issued: 07/19/2011
• Est. Priority Date: 07/31/2008
• Status: Expired due to Fees

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Matsumoto, Shogo, Oishi, Toshiya, Kuwahara, Seiji
• Primary Examiner(s): Chen; Shelley
• Application Number:
  US12/505,870
• Publication Number:
  US 20100030398A1
• Time in Patent Office: 729 Days
• Field of Search: 701/1
• US Class Current: 701/54
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/115 with planetary gears
• CPC Class Codes: B60W 2050/0031 Mathematical model of the vehicle
• CPC Class Codes: B60W 2510/0695 Inertia
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2710/0666 Engine torque
• CPC Class Codes: B60W 30/1882 characterised by the working point of the engine, e.g. by using engine output chart
• CPC Class Codes: F02D 2011/102 at least one throttle being moved only by an electric actuator
• CPC Class Codes: F02D 2200/602 Pedal position
• CPC Class Codes: F02D 2250/18 Control of the engine output torque
• CPC Class Codes: F02D 2250/21 during a transition between engine operation modes or states
• CPC Class Codes: F02D 41/08 for idling F02D41/06, F02D41/16 take precedence
• CPC Class Codes: F16H 2200/006 the gear ratios comprising eight forward speeds
• CPC Class Codes: F16H 2200/2097 comprising an orbital gear set member permanently connected to the housing, e.g. a sun wheel permanently connected to the housing
• CPC Class Codes: F16H 3/663 with conveying rotary motion between axially spaced orbital gears, e.g. RAVIGNEAUX

Abstract

Static demand engine torque set in a static torque setter is converted into dynamic demand engine torque in a converter using an engine model C (s) represented by a first-order lag function. A time constant T of engine model C (s) is calculated by a time constant calculator. The time constant calculator calculates time constant T in accordance with the static demand engine torque set in the static torque setter and dynamic demand engine torque set in a dynamic torque setter. The dynamic demand engine torque set in the dynamic torque setter is added to the dynamic demand engine torque converted from the static demand engine torque in the converter.

Claims

1. A control apparatus for a drive source, comprising:

a first setter that sets a static first demand value in accordance with an accelerator pedal position, said static first demand value being a demand value of output torque of an engine as said drive source in a steady state;

a second setter that automatically sets a dynamic second demand value based on an action of a vehicle;

said second demand value being a demand value of the output torque of said engine in a transition state;

a converter that converts said first demand value into a dynamic third demand value of the output torque of said engine in accordance with said first demand value and said second demand value; and

a controller that controls said engine in accordance with a sum of said second demand value and said third demand value;

wherein said second demand value corresponds to a minimum output torque to be output by said engine for maintaining an idling state of said engine.

2. The control apparatus for the drive source according to claim 1, wherein said converter converts said first demand value into said third demand value in accordance with a sum of said first demand value and said second demand value.

3. The control apparatus for the drive source according to claim 1, wherein said converter converts said first demand value into said third demand value using a map having said first demand value and said second demand value as parameters.

4. A control apparatus for a drive source, comprising:

means for setting a static first demand value in accordance with an accelerator pedal position, said static first demand value being a demand value of output torque of an engine as said drive source in a steady state;

means for automatically setting a dynamic second demand value based on an action of a vehicle, said second demand value being a demand value of the output torque of said engine in a transition state;

converting means for converting said first demand value into a dynamic third demand value of the output torque of said engine in accordance with said first demand value and said second demand value; and

means for controlling said engine in accordance with a sum of said second demand value and said third demand value;

wherein said second demand value corresponds to a minimum output torque to be output by said engine for maintaining an idling state of said engine.

5. The control apparatus for the drive source according to claim 4, wherein said converting means includes means for converting said first demand value into said third demand value in accordance with a sum of said first demand value and said second demand value.

6. The control apparatus for the drive source according to claim 4, wherein said converting means includes means for converting said first demand value into said third demand value using a map having said first demand value and said second demand value as parameters.