Stop-start control apparatus of internal combustion engine, and control method thereof

• US 6,839,621 B2
• Filed: 08/27/2002
• Issued: 01/04/2005
• Est. Priority Date: 08/28/2001
• Status: Expired due to Fees

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Kaneko, Tomohiro
• Primary Examiner(s): Vo, Hieu T.
• Application Number:
  US10/487,402
• Publication Number:
  US 20040214689A1
• Time in Patent Office: 861 Days
• Field of Search: 701/112, 123/179.4
• US Class Current: 701/112
• CPC Class Codes: F02B 2275/14 Direct injection into combustion chamber
• CPC Class Codes: F02B 29/0406 Layout of the intake air cooling or coolant circuit
• CPC Class Codes: F02B 3/06 with compression ignition compression ignition engines using air or gas for blowing fuel into compressed air in cylinder F02B13/02
• CPC Class Codes: F02D 17/04 rendering engines inoperative or idling, e.g. caused by abnormal conditions dependent on lubricating conditions F01M1/22; dependent on cooling F01P5/14
• CPC Class Codes: F02D 41/0097 using means for generating speed signals
• CPC Class Codes: F02D 41/042 for stopping the engine
• CPC Class Codes: F02M 26/05 High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
• CPC Class Codes: F02M 26/23 Layout, e.g. schematics
• CPC Class Codes: F02M 26/33 controlling the temperature of the recirculated gases
• CPC Class Codes: F02N 11/0814 comprising means for controlling automatic idle-start-stop
• CPC Class Codes: F02N 11/0818 Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
• CPC Class Codes: F02N 11/0844 with means for restarting the engine directly after an engine stop request, e.g. caused by change of driver mind
• CPC Class Codes: F02N 2200/022 Engine speed
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

In an eco-run control, determination of a stop of an internal combustion engine (1) is reliably and promptly made. An internal combustion engine stop-start control apparatus for executing a control of stopping the internal combustion engine (1) upon satisfaction of a predetermined stop condition, and for executing a control of starting the internal combustion engine (1) upon satisfaction of a predetermined start condition, has: stop request determination means (step S1) for determining that there is a request for stopping the internal combustion engine (1) based on satisfaction of the stop condition; and stop determination means (steps S2, S4) for determining a stop of the internal combustion engine (1) based on a state of a predetermined physical quantity that changes in relation to operation of the internal combustion engine (1), the state occurring within a predetermined determination time (Ten), and for setting the determination time (Ten) shorter if the request for stopping the internal combustion engine (1) is present than if the request is absent.

Claims

1. A vehicle-installed internal combustion engine stop-start control apparatus that executes a control of stopping an internal combustion engine upon satisfaction of a predetermined stop condition, and that executes a control of starting the internal combustion engine upon satisfaction of a predetermined start condition, the control apparatus, comprising:

stop request determination portion which determines that there is a request for stopping the internal combustion engine based on satisfaction of the stop condition; and

stop determination portion which determines a stop of the internal combustion engine based on a state of a predetermined physical quantity that changes in relation to operation of the internal combustion engine, the state occurring within a predetermined first determination time, and for, if the request for stopping the internal combustion engine is present, setting the first determination time at a time that is shorter than a second determination time set if the request is absent.

2. The control apparatus according to claim 1, wherein the physical quantity is a rotation angle of an output shaft of the internal combustion engine.

3. The control apparatus according to claim 1, wherein the state is a state where the rotation angle of the output shaft within the first determination time is equal to, or less than a predetermined rotation angle.

4. The control apparatus according to claim 2, wherein the state is a state where the pulse signal is not outputted within the determination time.

5. The control apparatus according to claim 2, wherein the state is a state where the rotation angle of the output shaft within the determination time is equal to, or less than a predetermined rotation angle.

6. The control apparatus according to claim 1, further comprising a crank angle sensor for detecting an angle of an output shaft of the internal combustion engine,

wherein the physical quantity is a pulse signal output from the crank angle sensor.

7. The control apparatus according to claim 1, wherein the state is a state where the pulse signal is not outputted within the first determination time.

8. The control apparatus according to claim 1, wherein the stop condition is a condition that a vehicle is at a stop and a brake operation of the vehicle is executed.

9. A vehicle-installed internal combustion engine stop-start control apparatus that executes a control of stopping an internal combustion engine upon satisfaction of a predetermined stop condition, and that executes a control of starting the internal combustion engine upon satisfaction of a predetermined start condition, the control apparatus, comprising:

stop request determination portion which determines that there is a request for stopping the internal combustion engine based on satisfaction of the stop condition; and

stop determination portion which determines a stop of the internal combustion engine based on elapse of a predetermined time from a predetermined time point if the internal combustion engine is stopped based on a request for stopping the internal combustion engine,

wherein the predetermined time is set based on data including at least a degree of decrease in a number of rotations of the internal combustion engine.

10. The control apparatus according to claim 9, wherein the predetermined time is a time that elapses until the internal combustion engine is brought to a stop from an idling state of the internal combustion engine based on satisfaction of the stop condition.

11. The control apparatus according to claim 9, wherein the predetermined time point relates to the control of stopping the internal combustion engine.

12. The control apparatus according to claim 11, wherein the predetermined time point is one of:

a time point at which the request for stopping the internal combustion engine is output,

a time point at which a stop control of the internal combustion engine is started, and

a time point at which fuel injection of the internal combustion engine is stopped.

13. The control apparatus according to claim 9, wherein the stop condition is a condition that a vehicle is at a stop and a brake operation of the vehicle is executed.

14. A vehicle-installed internal combustion engine stop-start control method that executes a control of stopping an internal combustion engine upon satisfaction of a predetermined stop condition, and that executes a control of starting the internal combustion engine upon satisfaction of a predetermined start condition, the control method comprising the steps of,

determining that there is a request for stopping the internal combustion engine based on satisfaction of the stop condition, and

determining a stop of the internal combustion engine based on a state of a predetermined physical quantity that changes in relation to operation of the internal combustion engine, the state occurring within a predetermined first determination time, and,

setting the first determination time if the request for stopping the internal combustion engine is present, the first determination time is shorter than a second determination time if the request is absent.

15. A vehicle-installed internal combustion engine stop-start control method that executes a control of stopping an internal combustion engine upon satisfaction of a predetermined stop condition, and that executes a control of starting the internal combustion engine upon satisfaction of a predetermined start condition, the control method comprising the steps of,

determining that there is a request for stopping the internal combustion engine based on satisfaction of the stop condition, and

determining a stop of the internal combustion engine based on elapse of a predetermined time from a predetermined time point if the internal combustion engine is stopped based on a request for stopping the internal combustion engine,

wherein the predetermined time is set based on data including at least a degree of decrease in a number of rotations of the internal combustion engine.