JP2011106357A - Idling stop control device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid inconvenience associated with the stopping of an engine while avoiding the restart of the engine when getting in and out, relating to an idling stop control device for a vehicle. <P>SOLUTION: The idling stop control device for the vehicle includes control means implementing idling stop when a predetermined condition is satisfied. It is determined whether a door of the vehicle is open or close, and if the vehicle door is open as the determination result, the implementation of the idling stop is interrupted. In particular, if the idling stop is in implementation when the vehicle door transitions from a closed state to an open state as the determination result, the implementation of the idling stop is immediately released. Alternately, if the vehicle door transitions from an open state to a closed state as the determination result, the interruption of the implementation of the idling stop is maintained for a predetermined time period after the transition. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an idling stop control device for a vehicle, and more particularly to a control device that is mounted on a vehicle such as a taxi and is suitable for executing an idling stop when a predetermined condition is satisfied.

  Conventionally, an idling stop control device for a vehicle that executes an idling stop in which the operation of an engine is stopped at least when the vehicle is stopped is known (for example, see Patent Document 1). In the vehicle idling stop control device, when the vehicle door is opened and closed after the engine operation is stopped, the release (restart) of the engine operation stop is delayed. For this reason, according to the idling stop control device for a vehicle described above, it is possible to prevent the engine from being restarted by continuing the engine stoppage at least when the vehicle door is opened and closed when the vehicle is stopped. Thus, it is possible to avoid giving passengers discomfort associated with restarting the engine.

Japanese Patent No. 3581929

  However, in the device described in Patent Document 1, when the vehicle door is opened and closed, the engine restart may be delayed even though the engine restart condition is satisfied. There is a possibility that inconvenience such as a significant capacity reduction of the in-vehicle battery may occur due to the fact that the operation is not performed or is delayed.

  The present invention has been made in view of the above points, and provides a vehicle idling stop control device capable of avoiding inconvenience associated with engine stop while avoiding restart of the engine during getting on and off. Objective.

  The above object is a vehicle idling stop control device including a control unit that executes idling stop when a predetermined condition is satisfied, and includes a door opening / closing determination unit that determines opening / closing of a vehicle door, and the control unit includes: When the vehicle door is open as a determination result of the door opening / closing determination means, the vehicle idling stop control device for stopping the idling stop is achieved.

  In the aspect of the invention, when the vehicle door is open, the idling stop associated with the establishment of the predetermined condition is stopped. In such a configuration, the engine is operated while the vehicle door is open. Therefore, according to the present invention, it is possible to avoid the inconvenience associated with stopping the engine while avoiding restarting the engine while getting on and off when the vehicle door is opened.

  In the above-described vehicle idling stop control device, the control unit immediately executes the idling stop when the vehicle door is shifted from the closed state to the open state as a determination result of the door opening / closing determination unit. The idling stop execution may be canceled.

  Further, in the above-described vehicle idling stop control device, when the vehicle door shifts from an open state to a closed state as a determination result of the door open / close determination unit, the control unit thereafter stops the idling stop execution for a predetermined period. It may be continued.

  ADVANTAGE OF THE INVENTION According to this invention, the inconvenience accompanying an engine stop can be avoided, avoiding restart of the engine in getting on and off.

It is a block diagram of the idling stop control apparatus for vehicles which is one Example of this invention. It is a flowchart of an example of the control routine performed in the idling stop control apparatus for vehicles of a present Example. It is an operation | movement time chart of an example implement | achieved in the idling stop control apparatus for vehicles of a present Example.

  Hereinafter, a specific embodiment of a vehicle idling stop control device according to the present invention will be described with reference to the drawings.

  FIG. 1 shows a configuration diagram of a vehicle idling stop control device 10 according to an embodiment of the present invention. The vehicle idling stop control device 10 according to the present embodiment is mounted on a vehicle that can run using an engine as a power source (for example, including a hybrid vehicle that uses an electric motor as a power source). It is a device that executes an idling stop that automatically stops the operation of the engine. Further, the vehicle idling stop control device 10 is an idling stop vehicle such as a taxi (for example, the above-described hybrid vehicle) that can put a passenger in the vehicle and can automatically open and close the door next to the rear seat by a driver's operation. It is a device mounted on.

  In this embodiment, the vehicle idling stop control device 10 includes an electronic control unit (hereinafter referred to as an “eco-run ECU”) 12 mainly composed of a microcomputer. The eco-run ECU 12 is connected with various sensors 14 necessary for determining whether or not to perform idling stop. The various sensors 14 are a vehicle speed sensor that detects the vehicle speed, a throttle sensor that detects the throttle opening, an idle switch that detects whether the throttle valve is fully closed, a navigation system that detects the current position of the vehicle on a map, and the like. Output signals from the various sensors 14 are supplied to the eco-run ECU 12. Based on the output signals of the various sensors 14, the eco-run ECU 12 determines whether or not an idling stop execution condition for automatically stopping the engine operation is satisfied.

  The eco-run ECU 12 is also connected with an engine actuator 16 for operating / stopping the engine. The engine actuator 16 is a fuel injection valve that injects fuel toward the combustion chamber or the intake port, a throttle valve provided in the air intake passage, a variable valve mechanism that varies each lift amount and action of the intake valve. The eco-run ECU 12 controls the engine actuator 16 based on the determination result of whether or not the idling stop execution condition is satisfied.

  In the vehicle idling stop control device 10, the eco-run ECU 12, in principle, performs idling when it detects a stop of the vehicle such as waiting for a signal using various sensors 14 after the initial start of the engine accompanying the start operation of the driver. It is determined that the condition for permitting the execution of the stop is satisfied, and the engine actuator 16 is controlled so as to automatically stop the operation of the engine.

  Further, when the eco-run ECU 12 executes idling stop as described above to automatically stop the engine operation, the eco-run ECU 12 uses various sensors 14 to detect that the driver has depressed the accelerator pedal to start the vehicle. In the case of a hybrid vehicle, when it is detected that the engine should be operated due to insufficient battery capacity with respect to the required load, in principle, it is determined that the idling stop execution condition is not satisfied, and in order to cancel the idling stop execution, The engine actuator 16 is controlled so as to crank the engine and automatically start (restart) its operation.

  Therefore, according to the vehicle idling stop control device 10 of the present embodiment, the idling stop can be executed when the idling stop execution condition for stopping the operation of the engine is satisfied by stopping the vehicle after the engine is started for the first time. As a result, fuel consumption can be improved. Further, when the idling stop execution condition is not satisfied afterward due to an accelerator operation or the like, the engine can be restarted to cancel the idling stop execution, so that the required load can be supplemented by engine operation.

  By the way, if the above-mentioned idling stop execution / cancellation is performed regardless of occupant getting on and off (especially passenger getting on and off by taxi), the engine is restarted from the stop to the operation while the occupant gets on and off. This may cause a situation in which the passengers getting on and off the vehicle feel uncomfortable. Therefore, the vehicle idling stop control device 10 according to the present embodiment is characterized in that the engine is prevented from being restarted while the passenger is getting on and off. Hereinafter, with reference to FIG.2 and FIG.3, the characteristic part of a present Example is demonstrated.

FIG. 2 shows a flowchart of an example of a control routine executed by the eco-run ECU 12 in the vehicle idling stop control device 10 of the present embodiment. FIG. 3 shows an operation time chart of an example realized in the vehicle idling stop control device 10 of the present embodiment. FIG. 3A is an operation time chart when the idling stop execution condition based on the outputs of the various sensors 14 is not satisfied at the time when the vehicle door shifts from the closed state to the open state (time t _A1 ). FIG. 3B is an operation time chart when the idling stop execution condition based on the outputs of the various sensors 14 is satisfied at the time (time t _B2 ) when the vehicle door shifts from the closed state to the open state. Are shown respectively.

  In this embodiment, a door opening switch 20 is connected to the eco-run ECU 12. The door opening switch 20 is a switch that outputs a signal corresponding to whether the vehicle door is open or closed. The door opening switch 20 is not particularly limited as long as it corresponds to a left rear seat door that can be opened and closed automatically by a driver's operation when a passenger gets on and off in a taxi, but only for a rear seat door. Or it may correspond to the doors of all seats. The output of the door opening switch 20 is supplied to the eco-run ECU 12. The eco-run ECU 12 determines opening / closing of the vehicle door based on the output signal of the door opening switch 20.

  When the driver performs a start operation after turning on the power (after turning on the ignition switch), the eco-run ECU 12 determines whether or not the initial start of the engine accompanying the start operation has been completed (step 100). As a result of the determination, if it is determined that the initial start of the engine has been completed, it is next determined whether the vehicle door has been opened or closed based on the output of the door open switch 20, and whether the vehicle door has transitioned from the closed state to the open state. It is determined whether or not (step 102). As a result, when it is not determined that the transition has been performed, that is, when a negative determination is made, the processing after step 100 is executed again.

On the other hand, when it is determined that the vehicle door has shifted from the closed state to the open state, that is, when an affirmative determination is made, the eco-run ECU 12 next performs an idling stop that automatically stops the engine operation based on the outputs of the various sensors 14. When the execution condition is satisfied, it is determined whether or not the idling stop is actually executed (step 104). If the result of the determination is that idling stop is not currently being executed and the engine is operating (as shown in FIG. 3A), then the idling stop is continued until the vehicle door is closed. Measures for prohibiting migration are taken (step 106). In this case, even when the vehicle door is in the open state (time t _A1 to time t _A3 ), the idling stop execution condition based on the outputs of the various sensors 14 shifts from the non-established state to the established state ( time _{t A2),} then the idling stop is not executed, so that the operation of the engine is continued (time _{t A2} ~ time _t A3).

If the result of determination in step 104 is that idling stop has actually been executed before (time t _B1 ) and the engine operation has been automatically stopped (as shown in FIG. 3B), immediately. Measures are taken to stop idling stop and restart the engine (step 108). In this case, even when the idling stop execution condition based on the outputs of the various sensors 14 is satisfied when the vehicle door shifts from the closed state to the open state (time t _B2 ), the idling stop execution is immediately stopped. Then, the engine is restarted (time t _B2 ), and then the engine is operated (time t _B2 to time t _B3 ).

  When the eco-run ECU 12 executes the processing of step 106 or 108, the eco-run ECU 12 next determines whether the vehicle door is opened or closed based on the output of the door opening switch 20, and whether or not the vehicle door has shifted from the open state to the closed state. Is determined (step 110). As a result, if it is not determined that the transition has been performed, that is, if a negative determination is made, the processing after step 104 is executed again. On the other hand, if it is determined that the above transition has been performed, that is, if an affirmative determination is made, then a measure is taken to hold the engine state for a predetermined time T (step 112). Specifically, the idling stop is not executed in step 106, and the idling stop is stopped in step 108. Therefore, the engine operation is continued for a predetermined time T after the vehicle door is closed. The predetermined time T may be a general time required for the vehicle to start after the vehicle door is closed, and is, for example, 1 second or 5 seconds.

  In such processing of this embodiment, after the initial start of the engine, when the idling stop is not executed when the vehicle door shifts from the closed state to the open state (in the case shown in FIG. 3A), In the case where the idling stop can be prohibited at least until the vehicle door shifts from the open state to the closed state, and the idling stop is executed when the vehicle door shifts from the closed state to the open state (FIG. 3). In the case of (B), the execution of the idling stop can be canceled immediately, and the execution of the idling stop can be stopped at least until the vehicle door shifts from the open state to the closed state. That is, while the vehicle door is in the open state, even if the idling stop execution condition based on the outputs of the various sensors 14 is satisfied, the engine operation can be continued without continuing the idling stop.

  Therefore, according to the present embodiment, when the vehicle door is opened, the idling stop is canceled while the occupant (for example, a passenger in a taxi) gets on and off, and the engine is restarted from the stopped state to the operating state. It is possible to avoid this. Further, when the vehicle door is opened, the engine operation is continued while the occupant is getting on and off. Therefore, it is possible to avoid the occurrence of inconvenience such as a significant capacity reduction of the in-vehicle battery due to the engine stop. Therefore, according to the vehicle idling stop control device 10 of the present embodiment, it is possible to avoid inconvenience associated with engine stop while avoiding restart of the engine during getting on and off.

  In addition, when the idling stop is canceled when the vehicle door is opened and the engine operation is continued, the engine operation is continued only for a predetermined time T after that when the vehicle door shifts from the open state to the closed state. Can continue. Therefore, according to this embodiment, immediately after an occupant (for example, a passenger in a taxi) gets on and off and the vehicle door shifts from the open state to the closed state, the idling stop execution condition based on the outputs of the various sensors 14 is established. Even in this case, it is possible to continue to stop the idling stop. In this case, the engine is not automatically stopped immediately. Since the restart is not performed, it is possible to avoid discomfort caused by switching the operating state of the engine to the person who gets on or gets off.

  In the above-described embodiment, the eco-run ECU 12 determines whether the vehicle door is opened or closed based on the state of the door open switch 20, and the “door open / close determining means” described in the claims is shown in FIG. 2. By executing the processing of step 106 or 108 in the routine, the “control means” recited in the claims is realized.

  By the way, in the above embodiment, the engine is automatically stopped or restarted by determining whether or not the idling stop execution condition is satisfied comprehensively using the various sensors 14 and the door opening switch 20. When the vehicle on which the vehicle idling stop control device 10 of the present embodiment is mounted is a hybrid vehicle, a condition for prohibiting the driving of the electric motor may be included as a condition for restarting the engine.

10 Vehicle Idling Stop Control Device 12 Electronic Control Unit (Eco-run ECU)
20 Door open switch

Claims (3)

A vehicle idling stop control device comprising a control means for executing idling stop when a predetermined condition is satisfied,
Door opening / closing determination means for determining opening / closing of the vehicle door,
When the vehicle door is open as a result of determination by the door opening / closing determination means, the control means stops idling stop execution.   The control means cancels the idling stop immediately when the idling stop is executed when the vehicle door shifts from the closed state to the open state as a determination result of the door open / close determining means. The idling stop control device for a vehicle according to claim 1. The said control means continues the idling stop execution stop for a predetermined period after that when the vehicle door shifts from the open state to the closed state as a determination result of the door opening / closing determination means. The vehicle idling stop control device as described.

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