JP2007162813A - Range changeover control device of vehicle transmission - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a highly reliable range changeover control device of a vehicle transmission capable of predicting the range changeover operation of a driver, not changing over the range for a range changeover operation predicted that it is not the intention of the driver, and preventing the vehicle or a transmission from being damaged. <P>SOLUTION: The range changeover control device for a vehicle transmission is equipped with a range position output means for outputting a position signal of a plurality of range positions corresponding to the range of the transmission and a selected range position by a range changeover operation of the driver out of the plurality of range positions, a range changeover means for changing over the range of the transmission in accordance to the range position outputted by the range position output means, and a range changeover restricting means for restricting the range which can be changed over by the range changeover means regardless of the outputted range position from the range position output means according to the traveling state of the vehicle. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a range switching control device for a vehicle transmission, and particularly for a vehicle that predicts a driver's range switching operation and does not perform range switching for a range switching operation that is predicted not to be the driver's intention. The present invention relates to a transmission range switching control device.

  The vehicle is provided with a transmission for converting the driving force of the engine as required according to the traveling conditions and taking it out. Among these transmissions, there is a shift-by-wire system, that is, a range that is switched by a range switching unit in accordance with an output from a range position output unit that includes a shift lever switch that outputs a position signal of a shift lever range position.

JP 2002-59756 A JP 2002-178778 A Japanese Patent Laid-Open No. 2004-74941

  By the way, in a conventional shift change mechanism that performs a shift operation via a shift cable, it is possible to perform a shift operation to a reverse (also referred to as “R”) position even while moving forward at a certain vehicle speed.

  However, since an impact is accompanied during this shift operation, it is not preferable in terms of feeling and component durability.

  In Patent Document 2 described above, two switches are provided in order to prevent an erroneous operation of the driver, and the driver's intention is determined only when both switches are operated. However, there is a disadvantage that it is necessary to become familiar with the operation of the two switches and that an undesirable shift is possible if the two switches are operated.

  Furthermore, even if the shift change limit by speed is set by the shift-by-wire method, it is difficult to judge whether the shift operation is due to the driver's erroneous operation or the driver's intention, and various situations are avoided. For this reason, there is an inconvenience that a shift change is necessary when the shift operation is performed.

  An object of the present invention is to predict a driver's range switching operation, and not to perform range switching for a range switching operation that is predicted not to be a driver's intention, thereby preventing damage to the vehicle or the transmission. It is possible to achieve a highly reliable range switching control device for a vehicle transmission.

  Therefore, in order to eliminate the inconvenience described above, the present invention provides a plurality of range positions corresponding to a plurality of ranges included in the transmission, and a range selected by the driver's range switching operation from the plurality of range positions. Range switching control device for a vehicle transmission, comprising range position output means for outputting a position signal of the position, and range switching means for switching the range of the transmission according to the range position output by the range position output means And a range switching restricting means for restricting a range that can be switched by the range switching means regardless of a range position output from the range position output means according to a traveling state of the vehicle. .

  As described above in detail, according to the present invention, a plurality of range positions corresponding to a plurality of ranges included in the transmission, and a range position selected by a driver's range switching operation from the plurality of range positions. In a range change control device for a vehicle transmission, comprising: a range position output means for outputting a position signal; and a range change means for changing the range of the transmission according to the range position output by the range position output means. The range switching operation includes a range switching limiting unit that limits a range that can be switched by the range switching unit regardless of the range position output from the range position output unit according to the running state of the vehicle. However, it is predicted that it is not the intention of the driver by predicting whether it is due to the intention of the driver or something else (for example, erroneous operation) For Nji switching operation, due to the provision of a range shift limiting means can not be switched, it is possible to prevent the vehicle and transmission take damage, it is possible to realize a highly reliable speed change control.

  By inventing as described above, when the range is switched by the range switching means, regardless of the range position output from the range position output means, the range switching limiting means by the range switching limiting means according to the traveling state of the vehicle. Range switching operation that limits the range that can be switched and predicts whether the range switching operation is due to the driver's intention or something else (for example, erroneous operation) and is not the driver's intention Is not switched, and the vehicle and the transmission are prevented from being damaged, and the shift control with high reliability is realized.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

  1 to 3 show an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a range switching control device that employs a shift-by-wire system (also referred to as a “shift-by-wire system”) of a vehicle transmission 9 described later.

  As shown in FIG. 1, the range switching control device 1 includes shift control means 2 that is a shift controller. The shift control means 2 includes an AT controller, a fuel injection controller, a display device (lamp, shift indicator, etc.), a key. A vehicle device 3 comprising an interlock control system is provided in communication, and a range position output means 5 comprising a shift lever switch provided on the shift lever 4, a battery 6, vehicle information 7, and a range switching means 8 are communicated. Provide.

  At this time, the range position output means 5 includes a plurality of range positions corresponding to a plurality of ranges possessed by a transmission (also referred to as “AT” or “automatic transmission”) 9 and a plurality of range positions. The position signal of the range position selected by the driver's range switching operation is output.

  The vehicle information 7 includes vehicle speed (also referred to as “SPD”), throttle opening (also referred to as “THR”), brake pedal signal (also referred to as “stop lamp SW”), ignition switch ( It is also expressed as “IGN SW”).

  Further, the range switching means 8 switches the range of the transmission 9 in accordance with the range position output by the range position output means 5.

  As shown in FIG. 1, the range switching means 8 is attached to the angle sensor 10, a motor gear unit 11 that is a shift ACT, a drive motor 12 attached to the motor gear unit 11, and the transmission 9. The shift switch 13 is an inhibitor switch.

  At this time, the shift control means 2 of the range switching control device 1 is a range that can be switched by the range switching means 8 regardless of the range position output from the range position output means 5 according to the running state of the vehicle. The range switching limiting means 14 is limited.

  More specifically, the shift control means 2 of the range switching control device 1 includes a range switching limiting means 14 for predicting whether the shift operation is due to a driver's erroneous operation or due to the driver's intention. This determines whether or not to implement the change. The estimation of the driver's intention at this time uses the vehicle speed, the accelerator opening, and the brake pedal signal.

  Further, the range switching limiting means 14 is such that the range position output from the range position output means 5 is neutral (also referred to as “D range”) when the vehicle is in a traveling state other than the deceleration traveling state. When the reverse range (also referred to as “R range”) is selected, or when the neutral range is selected from the reverse range, or when the forward range is selected, the range switching is limited. Yes (see FIG. 2).

  That is, when the driver is about to decelerate, the driver's intention is determined.

  If the above conditions are not met, it is determined that the operation is incorrect, and the shift change is not performed.

  At this time, when the shift change is not performed, it is possible to alert the driver by using a notification means such as an alarm, a vibration generator, a lamp or the like.

  Further, the range switching limiting means 14 is configured such that the range position output from the range position output means 5 moves forward, neutral from the parking range (also referred to as “P range”) or in a traveling state where the vehicle speed is not zero. When the reverse range is selected, the range switching is limited (see FIG. 3).

  In other words, the shift to the parking range has a large impact due to the shift change when the vehicle speed is increasing, and therefore, the vehicle speed can be operated only near zero.

  Furthermore, when the shift switch 13 is not momentary but is fixed, a shift lock mechanism is provided to eliminate deviation from the actual shift position and to restrict the shift to the prohibited state.

  Further, it is possible to provide a hysteresis for the vehicle speed determination value.

  Next, the operation will be described along the control flowchart of the range switching control device 1 of FIGS.

  First, when the vehicle is in a traveling state other than the decelerating traveling state, the range position output from the range position output means 5 is set to neutral from the forward range or reverse range, or from the reverse range to neutral or forward range. The case where it selects is demonstrated.

  That is, as shown in FIG. 2, when the control program starts (A01), the process proceeds to determination (A02) as to whether or not the vehicle is in a deceleration state. If this determination (A02) is NO, the shift change control is stopped. When the processing proceeds to (alarm ringing) processing (A03) and the determination (A02) is YES, the processing proceeds to determination (A04) whether the accelerator opening is almost fully open.

  In the determination (A04) of whether or not the accelerator opening is almost fully opened, if the determination (A04) is NO, the process shifts to the above-described shift change control stop (alarm ringing) process (A03). If (A04) is YES, the process proceeds to determination (A05) of whether or not the brake is ON.

  In the determination (A05) of whether or not the brake is ON, if the determination (A05) is NO, the process shifts to the shift change control stop (alarm ringing) process (A03) described above, and the determination (A05) is determined. In the case of YES, the process proceeds to shift change control execution processing (A06).

  After the above-described shift change control stop (alarm sounding) process (A03) and shift change control execution process (A06), the process proceeds to the end (A07).

  Next, in a traveling state where the vehicle speed is not zero (also referred to as “zero”), when the range position output from the range position output means 5 selects forward, neutral, or reverse range from the parking range, or A case where the parking range is selected from the forward, neutral, or reverse range will be described.

  That is, as shown in FIG. 3, when the control program starts (B01), the process proceeds to determination (B02) as to whether or not the vehicle speed is substantially zero.

  If the determination (B02) is NO in the determination (B02) as to whether or not the vehicle speed is substantially zero, the process shifts to a shift change control stop (alarm sounding) process (B03) to determine (B02). ) Is YES, the process proceeds to shift change control execution process (B04).

  After the above-described shift change control stop (alarm sounding) process (B03) and shift change control execution process (B04), the process proceeds to the end (B05).

  Thereby, the shift control means 2 of the range switching control device 1 can be switched by the range switching means 8 regardless of the range position output from the range position output means 5 according to the traveling state of the vehicle. By providing the range switching limiting means 14 that limits the range, the range switching operation is based on the driver's intention or other (for example, erroneous operation), and is not the driver's intention. With respect to the predicted range switching operation, it is possible to prevent the vehicle and the transmission from being damaged by the range switching limiting means that cannot be switched, and it is possible to realize a highly reliable shift control.

  Further, when the vehicle is in a traveling state other than the decelerating traveling state, the range position output from the range position output means 5 is neutral from the forward range or reverse range, or is neutral from the reverse range or forward range. When selected, the range switching is limited by the range switching limiting means 14 so that it is impossible to switch the range for the impossible range switching in the normal traveling state other than the deceleration state. Can be reliably prevented, and smooth running of the vehicle can be realized.

  Further, in a driving state where the vehicle speed is not zero, when the range position output from the range position output means 5 selects the parking range from the forward, neutral, or reverse range, the range switching limiting means 14 By restricting the switching, the switching operation to the parking range can be surely prevented in a traveling state where the vehicle speed is other than zero, and a highly reliable shift control can be realized.

  The present invention is not limited to the above-described embodiments, and various application modifications are possible.

  For example, in the embodiment of the present invention, the logic is assumed to be a transmission (also referred to as “AT” or “automatic transmission”), but an automatic transmission (“CVT”) is a transmission mechanism of a two-wheeled vehicle or a special machine. Can also be applied.

  The logic between the forward range and the reverse range can also be applied to a manual transmission (also referred to as “MT” or “manual transmission”).

1 is a system diagram of a range switching control device for a vehicle transmission according to an embodiment of the present invention. 5 is a control flowchart when a neutral or reverse range is selected from the forward range in the range switching control device of the vehicle transmission, or when a neutral or forward range is selected from the reverse range. It is a control flowchart when the forward, neutral, or reverse range is selected from the parking range in the range switching control device of the vehicle transmission, or when the parking range is selected from the forward, neutral, or reverse range.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Range switching control apparatus 2 Shift control means 3 Vehicle apparatus 4 Shift lever 5 Range position output means 6 Battery 7 Vehicle information 8 Range switching means 9 Transmission (also described as "AT" or "automatic transmission")
DESCRIPTION OF SYMBOLS 10 Angle sensor 11 Motor gear unit 12 Drive motor 13 Shift switch 14 Range switching restriction means

Claims (3)

  A plurality of range positions corresponding to a plurality of ranges possessed by the transmission; a range position output means for outputting a position signal of a range position selected by a driver's range switching operation from the plurality of range positions; and A range switching control device for a vehicle transmission, comprising range switching means for switching the range of the transmission according to the range position output by the range position output means, wherein the range position output is determined according to the running state of the vehicle. A range switching control device for a vehicle transmission, comprising range switching limiting means for limiting a range that can be switched by the range switching means regardless of a range position output from the means.   When the vehicle is in a traveling state other than the decelerating traveling state, the range position output from the range position output unit is neutral from the forward range, or when the reverse range is selected, or neutral from the reverse range, The range switching control device for a vehicle transmission according to claim 1, wherein when the forward range is selected, the range switching is limited.   The range switch restricting means switches the range when the range position output from the range position output means selects a parking range from a forward, neutral, or reverse range when the vehicle speed is not zero. The range switching control device for a vehicle transmission according to claim 1, wherein the range switching control device is a means to be limited.

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