JP2787304B2 - Cooler idle-up control device for vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for controlling an idle operation state of an engine.
Device. [Prior Art] Conventionally, this kind of engine idle speed control device
Some of the engine speed and throttle valve opening
Is a control signal based on the detected signals.
To the motor to move the rod forward or
Retract and move the throttle valve stop position
Thus, under certain conditions I during idle operation,
Gin rotation speed feedback control [rotation speed feedback
(NFB) control] while idling
Under condition II, throttle valve position feedback
(PFB) has been proposed to be able to control
You. Here, the above condition I satisfies at least the following items.
When the engine is relatively stable.
Say. (1) The idle switch changed from off to on
That is, the predetermined time has elapsed. (2) the vehicle speed is extremely low (for example, 2.0 kg / h or less);
That is, the vehicle speed is determined by a pulse signal having a frequency proportional to the vehicle speed.
The signal frequency from the vehicle speed sensor to be detected is lower than a predetermined value.
That. (3) In vehicles with coolers, etc.,
After switching the cooler relay etc. according to
Have passed. The condition II does not satisfy the condition I.
The gin is relatively unstable and the feedback
The condition when you want to control. By the way, a conventional vehicle cooler idle-up control device is used.
The cooler switch (cooler SW) is on (cooler
Operation request occurs), the following operations are performed.
I do. (1) Automatically turn on the compressor clutch
To start driving the compressor and
Normal engine idle rotation by controlling idle output
Engine power to increase rpm rather than speed.
Let In other words, increase the amount of air to
The mixture amount is increased so as to increase. (2) The engine output is increased and the dilator
Activate the cooler and after a certain time,
Turn the clutch on. (3) While increasing the engine output,
Check the number of rotations,
Turn on the compressor compressor clutch. [Problems to be solved by the invention] However, such a conventional cooler eye for a vehicle
Control system, the vehicle operates the throttle valve at extremely low speed.
When driving in the closed position, the cooler switch
Then, the engine output increases and the vehicle speed increases
When an unexpected forward traveling state or reverse traveling state is caused,
There is a problem. This allows the vehicle to move suddenly forward or backward.
Thus, a collision may occur (particularly, a rear-end collision). Conventionally, as a method to prevent such disadvantages,
Driving conditions in which driving is predicted (for example,
The automatic transmission is in the driving range).
U.S. Patent to actively release idle-up
It is disclosed in Japanese Patent Publication No. 31303128. However, this
According to the conventional system, the engine output during running at extremely low speeds
It can prevent unexpected advance and retreat from rising
However, in the driving state where the running of the vehicle is predicted
Is not always idle up, so cooler
There is a disadvantage that it cannot be operated sufficiently. You
In other words, according to this conventional device, for example, a transmission
If the vehicle is stopped in neutral
Is operating and idle-up is being performed.
When the diver moves the gear shift lever to the drive range,
The idle-up is released in the meantime, and the cooler is effective
May deteriorate rapidly. In addition, this conventional device
When the cooler is operating,
Operating conditions that are not
If idle, execute / cancel idle-up each time
Is repeated, so that drivability deteriorates.
The possibility of engine stall may increase
You. The present invention solves such disadvantages of the conventional device.
And prevent a sudden increase in vehicle speed.
To improve vehicle safety.
The vehicle cooler idle-up control device
The purpose is to provide. [Means for Solving the Problems] For this reason, the vehicle cooler idle-up control of the present invention
The device is a cooler compressor driven by the engine.
A command signal to activate the cooler compressor
Cooler switch, command signal of the cooler switch
Activate the cooler compressor when prompted
Cooler operation control means for outputting a control signal, said cooler
When the switch command signal is issued, the engine
The control signal for increasing the idle speed is sent to the engine speed
Cooler idle-up control means that outputs to the adjustment element,
The connection between the engine and the drive mechanism of the vehicle or the connection
Sensor to detect the preparation state of the combination, from the same sensor
Cooler idle-up control means according to the detection signal of
To prohibit the engine speed from increasing due to
Cooler compressor mainly by the above cooler operation control means
Prohibition of changing the operating state from non-operating side to operating side
It is characterized by having stopping means. Further, a cooler idle-up control device for a vehicle according to the present invention is provided.
Is the cooler compressor driven by the engine,
A command signal that activates the cooler compressor
Command signal of the cooler switch and the cooler switch
Control signal that activates the cooler compressor when
Operation control means for outputting a signal, the above-mentioned cooler switch
The above-mentioned engine idle when the command signal of
A control signal to increase the engine speed is required to adjust the engine speed.
Cooler idle-up control means for
The state of connection between the gin and the drive mechanism of the vehicle or the condition of the connection
Sensor for detecting the installation status, detection from the sensor
The cooler idle-up control means according to the signal
In addition to prohibiting changes to higher engine speeds,
Non-operation of cooler compressor by cooler operation control means
Prohibited hand that prohibits change of the operating state from the moving side to the working side
When gear, engine speed or load exceeds the set value
Prohibition release means for releasing the prohibition operation of the prohibition means
It is characterized by that. [Operation] With the above-described configuration, in the idle operation state, the cooling
The engine and the car are
When both drive mechanisms are connected or when connection is
When measured, (to increase idle speed
Engine rotation by cooler idle-up control means
Change to the increasing side and the cooler operation control means
Operating state of the compressor from the non-operating side to the operating side.
All changes are prohibited. In addition, the engine speed or load has exceeded the set value.
Sometimes, the above change of the engine speed to the increase side is prohibited.
From the non-operating side to the working side of the cooler compressor
The prohibition of the change of the moving state is released. Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIGS. 1 to 15 show a vehicular compressor according to a first embodiment of the present invention.
FIG. 1 shows a controller idle-up control device.
FIG. 2 is a main part configuration diagram, and FIGS.
A graph for explaining each action, FIG.
(B) and FIGS. 8-12 all illustrate its operation.
FIG. 13 is a flowchart showing a part of the flowchart.
Both the charts and Figs.
FIG. 16 is a block diagram showing a second embodiment of the present invention.
Block diagram showing a vehicle cooler idle-up control device
FIG. 17 shows a vehicular compressor according to a third embodiment of the present invention.
FIG. 3 is a block diagram illustrating a controller idle-up control device. As shown in FIG. 1, the vehicle mounted according to the first embodiment
Internal combustion period E (hereinafter simply referred to as gasoline engine)
"Engine E") is a turbocharger 3
I have. This turbocharger 3 discharges the engine E.
With the turbine 4 interposed in the air passage 2,
By the turbine 4 interposed in the intake passage 1 of the engine E
A rotary-driven compressor 5 is provided. It should be noted that a bypass that bypasses the turbine arrangement portion of the exhaust passage 2
The pass passage is connected to the exhaust passage 2 and this bypass
A waste gate valve 6 for opening and closing the passage is provided.
You. This wastegate valve 6 has two diaphragms
It is opened and closed by a pressure responsive device 7.
However, an electromagnetic switching valve 34 (this valve 34 is not shown for a valve body)
A pressure chamber of the pressure responsive device 7
By selectively supplying atmospheric pressure and supercharging pressure to
Adjust the open magnetism etc. of the gate valve 6 to at least 2
Various supercharging pressure characteristics can be realized. The intake passage 1 of the engine E has an upstream side (air
Air flow sensor 16, turbo in order from the cleaner side)
Charger 3 compressor 5, intercooler 8, electromagnetic fuel
Injection valves 9, 10 (these valves 9, 10 have different injection capacities) and
And an exhaust passage 2 of the engine E.
From the upstream side (engine combustion chamber side)
Turbine 4, catalytic converter 31 and diagram of bocharger 3
A muffler not shown is provided. As shown in FIG. 2, disposed in the intake passage 1 of the engine E
The shaft 11a of the throttle valve 11 is moved outside the intake passage 1.
It is connected to the rotary lever 11c. In addition, the end 11d of the throttle lever 11c has an accelerator
When the pedal (not shown) is depressed, the throttle lever 11
2. Turn the throttle valve 11 clockwise in FIG.
A wire (not shown) for rotating (opening direction) is connected.
The throttle valve 11 is attached in the closing direction.
A return spring (not shown) is installed.
When the tension of the wire is further reduced, the throttle valve 11
It is designed to close. By the way, when the engine is idling, the throttle valve 11
An actuator 12 for controlling the opening degree of
This actuator 12 has a worm 14a on the rotation axis.
DC motor (hereinafter simply referred to as “motor”) 13
The worm 14a with the motor 13 is an annular worm.
Meshed with the worm wheel 14b. The worm wheel 14b has a female threaded portion 14d.
The pipe shaft 14c is provided integrally with the pipe shaft 14c.
A rod having a male screw part 15a screwed into the female screw part 14d
Topper member) 15 includes worm wheel 14b and pipe
It is attached through the shaft 14c. The tip of the rod 15 is used as an idle sensor.
Through the idle switch 25 of the throttle lever 11c
At the end 11d of the throttle valve 11, the throttle valve 11 is closed (for example, fully closed).
State). Sand
The stop position of the throttle valve 11 on the closing side is
It is being regulated. Here, the idle switch 25 closes the throttle valve 11
At the chain side stop position (at this time, the engine speed
If the value is less than or equal to the predetermined value, the system will be in the idling operation state)
(Closed), otherwise turned off (open). The rod 15 has an elongated hole 15b formed therein.
A pin (not shown) on the actuator body side is inserted into the elongated hole 15b.
Is guided, so that the rod 15
The rotation is prevented. In this way, the tip of the rod 15 is
The motor 13
Is rotated in a certain direction,
Rotate the pipe shaft 14c and move the rod 15 to the actuator 1
When it is made to protrude (forward) from 2, the throttle valve 11
Open, rotate motor 13 in the opposite direction, and move rod 15
When retracted (retracted) into the tutor 12, the slot
Control so that the throttle valve 11 is closed by the action of the return spring
can do. That is, by driving the rod 15, the slot
Change the stop position of the closing side of the throttle valve 11
11 idle opening can be controlled. Also, the opening of the throttle valve 11 (throttle opening) is detected.
A throttle sensor 20 is provided for
The torque sensor 20 has an electric current proportional to the throttle opening.
A potentiometer or the like that generates pressure is used. Further, as shown in FIG.
A water temperature sensor 21 for detecting the cooling water temperature TW as
And the engine speed, for example, ignition
Ignition pulse information obtained from the primary minus terminal of
Engine speed sensor 17 that detects
You. Furthermore, the vehicle speed is adjusted to a frequency having a frequency proportional thereto.
A vehicle speed sensor 24 for detecting the vehicle speed signal is provided.
A known reed switch is used as the vehicle speed sensor 24.
Can be In addition, a crankshaft that detects the engine cranking state
A cranking switch 26 is provided as a
This cranking switch 26 is
On (closed) when turned on, off (open) otherwise
Switch. By the way, the air flow sensor 16 is arranged in the intake passage 1.
The number of Karman vortices generated by the installed columnar body is supersonic
Detected by wave modulating means or by a change in resistance
Or the like, the amount of intake air in the intake passage 1 can be reduced.
The digital signal from the airflow sensor 16
The output is idle speed control means M1, cooler idle up
Control means M2, idle-up inhibiting means M3 and idle
Input to the controller 29 as the
It is supposed to be. The airflow sensor 16
These digital outputs are, for example, 1/2 minutes in the controller 29.
After being passed through a circulator, it is subjected to various processes. In general, the air flow sensor 16 detects the low speed of the engine E.
It is said that malfunction occurs due to intake pulsation etc. under high load condition
However, in the present embodiment, the downstream of the airflow sensor 16 is used.
The intercooler 8 is provided on the side
By making appropriate adjustments, the above-mentioned intake pulsation is almost eliminated.
As it almost stopped, the airflow sensor 16
It is considered that the measurement reliability or accuracy is sufficiently high. In addition to the above sensors and switches,
Intake air temperature sensor 18 to detect, atmospheric pressure sensor to detect atmospheric pressure
19, O to detect oxygen concentration in exhaust gas _Two Sensor 22, engine
Knock sensor 23 for detecting knock state, distribution
The crank angle is detected by photoelectric conversion means with
Reference angle of crank angle sensor 27 and throttle valve 11
(This opening corresponds, for example, to an engine speed of around 600 rpm.
It is set as a small opening. ) Corresponding to
Detects the position (reference position) of rod 15 with tutor 12
Motor position switch as a position sensor
H 28 and cooler switch (cooler SW) 38 are provided.
Signals from these sensors and switches are
To the controller 29. The motor position switch 28 is shown in FIG.
Like, it is provided behind the rear end face of the rod 15,
ON (closed) near the position where the rod 15 is most retracted,
It is configured to be turned off (open) at other times. In addition, intake air temperature sensor 18, atmospheric pressure sensor 19, water temperature sensor 2
1, throttle sensor 20, O _Two Sensor 22, knock sensor 23, etc.
Since the detection signal is an analog signal,
The data is input to the controller 29 via the barter. The atmospheric pressure sensor 19 is incorporated in the controller 29.
May be. Also, an ignition coil 32 is provided.
The ignition coil 32 is connected to a switching transistor.
The primary current by the power transistor 30
It is supposed to be. Further, an indicator 35 is provided in the vehicle interior. The indicator 35 has a needle-type display section 35a.
Also, light emitting diodes (LEDs) are arranged in rows and
With a segment-type display section 35b where the LED flashes as appropriate
And so on. By the way, the controller 29 has a CPU and a memory (map).
Group with appropriate input / output interface
It is composed of a microcomputer.
Roller 29, ignition key to battery (power supply) 37
This ignition Keith connected via switch 36
Operation starts after switch 36 is turned on.
You. Also, the controller 29. Attached to vehicle drive mechanism 45
Clutch switch (clutch S
W) The clutch engagement signal and the
And a gear engagement signal indicating the meshing state is sent.
Also, from the controller 20, the engine E and
Connect the compressor 67 of the cooler 44 with the pulley mechanism 68
Roller compressor clutch 66
Cooler compressor clutch to cooler compressor clutch 66
The control signal is sent via the latching relay (cooler relay) 42.
The connections are made so that they can be supplied. The controller 29 is provided with the idle switch 25
When the idling operation state is detected by the
When the engine speed is lower than the specified value
Under the set condition I, the rotation speed sensor 17
Feedback control of engine speed (signal
Number feedback control) while the idle state
Under the other set condition II at the time of condition detection,
The position of the throttle valve 11 is determined by the signal from the torque sensor 20.
Ignition control to perform ignition feedback control.
After the on key switch 36 is turned on, the idle switch 25,
From rotation speed sensor 17, throttle sensor 20, vehicle speed sensor 24
The idle control signal based on the
The device of the idle speed control means M1 which outputs to the motor 13 of 12
Has ability. Also, when performing the speed feedback control
Fig. 3 shows the target engine speed Ns according to the cooling water temperature TW.
And perform the feedback control.
The target throttle opening according to the cooling water temperature TW.
.theta.s is changed as shown in FIG. Furthermore, the drive time ΔD of the motor 13 of the actuator 12
And the deviation ΔN or Δθ are shown in FIGS. 5 and 6, respectively.
It is shown as follows. Here, the deviation ΔN is the actual
Means the difference between engine speed Nf and target engine speed Ns
The deviation Δθ is the actual throttle opening θf and the target slot
It means the difference from the tor opening degree θs. Although the condition I has been described above, this condition
I means that at least the following items are satisfied:
The condition under which the engine is relatively stable. (1) Idle switch 25 changed from off to on
That is, the predetermined time has elapsed. (2) The vehicle speed is extremely low (for example, 2.0 km / h or less).
When. (3) In vehicles with coolers, etc.,
After the cooler relay is switched according to the
What you have. In addition, as the condition I, the actual engine speed (actual engine speed)
Number) from the target rotation speed is within the specified range
May be added. The condition II does not satisfy the condition I.
The gin is relatively unstable and the feedback
The condition when you want to control. In addition, each idle speed control in the controller 29
Control means M1, cooler idle up control means M2, idler
Top off prohibition means M _Three , Idle-up prohibition canceling means M _Four , Coo
Control operation means, cooler compressor operation control prohibition means
Of cooler compressor operation control prohibition release means
FIG. 7A and FIG. 7B show the flow of
You. In addition, idle-up prohibition means and cooler compressor
The operation control inhibiting means cooperates with the operation control inhibiting means. The terminals AA and BB in FIG. 7 (a) correspond to those in FIG. 7 (b)
Each has a connection relationship with the terminal having the same reference numeral therein. That is, first, after key-on, various flags and the like are reset.
Initialization is performed (step a1).
(Cooling water temperature TW, actual engine speed Nf, actual throttle open
Is read (step a2).
The target idle speed Ns (TW) based on the cooling water temperature TW and
And basic target throttle opening θs (TW) from the map
And the target rotation speed Ns and the target throttle opening θ, respectively.
s (steps a3 and a4). Then, in block A1, first, the cooler switch
(Cooler SW) 38 ON / OFF state is determined (step a)
5) When the cooler SW is on,
The image is preset (step a6).
Whether the cooler idle up flag is on
Is determined (step aa1).
If the target speed Ns is smaller than the target speed Nsc when the cooler is on
(Step a7), the target rotation speed Ns and the target
The target rotation speed Nsc when the cooler is on
And target throttle opening θsc at cooler on are set
(Step a8). Also, the target speed Nsc is equal to or less than the target speed Ns when the cooler is on.
If above, go through the NO route from step a7
The target rotation speed Ns and the throttle opening θs are
Target rotation speed Ns (TW) and throttle opening θ based on temperature
s (TW) is maintained respectively. If the cooler idle up flag is off,
From Tep aa1, via the NO route, the vehicle speed pulse timer
B (when the vehicle speed is 2.0 km / h or less) (Step 2a
a) and automatic transmission (A / T)
Selector position detection inhibitor switch (coupled
Sensor) 39 is parking (P) range or neutral
(N) range (step aa3), cooler eye
After turning on the dollar up flag (step aa
4), leading to step a7 described above. Note that the processing contents of step aa3 include the engine E
Clutch interposed between the output shaft of the vehicle and the drive mechanism 45 of the vehicle.
When the separation state of the switches is detected, the process proceeds to steps aa4 and a7.
And the actual gear position may be new.
When in the neutral position, move to steps aa4 and a7
May be implemented. Also, if the vehicle speed is more than 2km / h and the parking range
In other than the neutral range, cooler idle
After that, set the timer to a count number equivalent to 0.5 seconds.
(Step aa5), the processing of the block A1 ends. When the cooler SW38 is off, the cooler
After that, the timer is preset (step a9),
In addition, the cooler idle up flag is turned off.
(Step aa6), target rotation speed Ns and throttle opening
The degree θs is based on the target rotation speed Ns (TW) based on the cooling water temperature and
The throttle opening θs (TW) is maintained,
To aa5. Note that the determination in steps a5, aa2, and aa3 is performed.
By doing so, it functions as idle-up prohibition means
Is performed, and after the determination in steps a5, aa2, and aa3,
By performing the judgment of step aa7, the cooler complex
The function as the operation control prohibiting means is performed. Thus, in block A1, the target rotation speed Ns and the target
The target throttle opening θs is set and the cooler
When the on / off switch of the
After the cooler is turned on and the cooler is turned off,
The timer is preset with a count number equivalent to 2 seconds.
After the cooler idle is turned on, the timer
Set to. Next, in block A2, after the cooler idle is turned on
It is determined whether the timer is zero (step aa
7) When switching from cooler idle off state to on state
If a predetermined time has elapsed since
Turn on the latch flag (step aa8) and
To the top a10. If the timer is not zero after cooler idle on,
The cooler switch 38 is turned on 8 and the cooler
When the clutch flag is on (step aa
9, aa10), and the cooler switch 38 is on, and
When the engine speed Nf is 900 (rpm) or more (step aa
9, aa11), to step aa8. When the cooler switch 38 is off,
With switch 38 on, cooler compressor clutch
Is off, and the engine speed Nf is 900 (rp
m) if less than the cooler compressor
The clutch flag is turned off (step aa12),
It reaches the next step a10. Next, the on / off state of the idle switch (ID / SW) 25
State is determined (step a10), and the idle switch 25
In the off state, in block A3, first, the electric load
(Auxiliary equipment) prevents engine speed from dropping
To stop, the real-time learning value θr is set to 0.35 °.
(Step a11). Note that the operation of these accessories
If the decrease in engine speed due to
= 0. Next, Idle Speed Control (ISC) flag
Reset the switch (step a12), and switch the idle switch (I
D ・ SW) Count equivalent to 2 seconds in the timer immediately after turning on
Is preset (step a13). If the idle switch 25 is on, step a1
From 0 through the YES route to block A4, engine
Turn feedback control (step a24) and position
One of the feedback control (step a20)
Selected. First, in block A4, the idle switch 25 is turned on.
Status, set the ISC flag (step a15),
Then, the process proceeds to the next case (step a24). Timer is idle switch immediately after idle switch is turned on
2 seconds after switching from OFF to ON state of 25
(Step a16) and the vehicle speed pulse timer is zero.
(2.0 km / h or less) (Step a1)
7) And when the cooler SW is on, it is turned off to on
2 seconds have passed since the switch to (steps a18 and a23)
Sometimes, it reaches step a24. Also, immediately after the idle switch is turned on, the timer
2 seconds have passed since the switch 25 was switched from OFF to ON
After (step a16) and the vehicle speed pulse timer is set to the vehicle speed
Zero (less than 2.0 km / h)
A17) and the cooler SW is off and off from the on state
2 seconds have passed since the switch to the state (steps a18 and a19)
When there is, it reaches step a24. In step a24, the engine speed feedback system
Engine speed feedback to control
Set the (NFB) flag. In block A4, position feedback control
First, if it is detected that
The NFB flag is reset (step a20). Then, the processing of steps a13, a20, and a24 described above is performed.
After that, the processing from step a2 is executed again. In addition to the main flow described above, each
An interrupt processing flow is provided.
Is an interrupt signal or vehicle speed pulse from the clock every predetermined time.
Is executed sequentially using the interrupt signal as an interrupt signal. First, as shown in FIG.
In the routine, based on the interrupt request signal every 50 msec,
Timer after idle-on, immediately after idle switch-on
Timer, vehicle speed pulse timer, cooler-on timer,
After the cooler is turned off, each count of the timer is decremented (-1).
(Step b1), the count number after the subtraction becomes negative.
The timer count is kept at zero. This allows each timer to keep its counter for the set time.
Count is greater than 1 and the count is compared to zero.
By doing so, a timer function is exhibited. Next, as shown in FIG. 9, in the vehicle speed detection routine,
Each time a vehicle speed pulse is sent from the vehicle speed sensor 24, the vehicle speed
Set the pulse timer to a count equivalent to 0.7 seconds
(Step c1), whereby the vehicle speed sensor 24
0.7 seconds from when the vehicle speed pulse is sent from
The vehicle speed is detected when the count of the pulse timer becomes 1 or more.
State. In addition, as shown in FIG.
Actuator drive for speed control (ISC)
In the routine, based on the interrupt request signal
Switch 25 is ON (when the ISC flag is set) and NFB
When the flag is set (steps d1 and d2),
In step D1, NFB control is executed. In block D1, the difference Δ between the target speed Ns and the actual speed Nf
N is obtained (step d3), and the motor 13 corresponding to the difference ΔN is determined.
Is calculated (step d4), and this driving time is calculated.
D is set in the motor timer (step d5).
The motor timer is triggered by triggering the motor timer.
The motor 13 is driven until becomes zero (step d6). Further, as shown in FIG.
Dollar Speed Control (ISC) Actuator Drive
In the dynamic routine, based on the interrupt request signal every 100 msec,
When the idle switch 25 is turned on (when the ISC flag is set)
When the NFB flag is reset (steps e1, e
2), PFB control is executed in block E1. In block E1, correction is performed in the main routine.
Target throttle opening θs as the idle control signal
And the actual throttle opening θf to obtain the difference Δθ (step
e3), calculating the drive time D of the motor 13 according to the difference Δθ
(Step e4), and this driving time D is
(Step e5) and reset this motor timer
Until the motor timer reaches zero.
The motor 13 is driven (step e6). When ΔD is positive, the throttle valve 11 is opened.
Side, and when ΔD is negative, the throttle valve
11 is driven to the closing side. With this, the engine speed feedback control and
In both cases of position feedback control,
The engine is controlled in the target state. sand
In other words, the engine idle speed can be controlled to the optimal state.
Because Also, as shown in FIG.
Switch operation routine is provided and the cooler compressor
When the scratch flag is on (step f1),
Close the cooler compressor clutch 66 to turn it on.
Outputs control signal to relay compressor clutch relay 42
(Step f2), cooler compressor clutch hula
When the cooling is off, the cooler compressor clutch
The operation of the relay 42 is stopped (step f3). The blocks A1 and A2 shown in FIGS.
Change the processing as shown in block A5 in FIG.
Therefore, the blocks may be replaced with blocks A1 and A2. Further, in the first embodiment, the motor 13 is used to
It is configured so that the opening of the tor valve can be finely adjusted.
The cooler idle up mechanism 43 is shown in FIG.
Such a diaphragm type differential pressure responsive mechanism may be used,
A part of the configuration shown in FIG. 14 is configured as shown in FIG.
Is also good. In addition, the inhibitor switch 39 has a P range and an N range.
And the clutch switch 46 is disconnected.
And the gear position sensor 47 is in the neutral position.
Switch turns on. 14 and 15, reference numeral 24a is a reed switch, 43a
Is a solenoid, 48 is a key switch, 40 is a temperature switch,
Reference numeral 69 indicates a spark plug. A vehicle cooler idler as a first embodiment of the present invention
Since the control device is configured as described above,
The roller 29 is provided with an idle speed control means M1 and a cooler eye.
Dollar-up control means M2, idle-up prohibition means M3 and
The function of the idle-up prohibition canceling means M4 is as follows.
Demonstrate. i) Function as idle speed control means M1 The engine cooling water temperature TW from the water temperature sensor 21 and the cooling water temperature
Target rotation in response to the cooler on / off signal from the
Set the number Ns and the target throttle opening θs (step
A3, a4, a8). At this time, it responds to signals from other sensors 16-20, 22-28.
The target rotation speed Ns and the target throttle opening θs
May be changed. ii) Cooler idle-up control means M2 and cooler operation
Function as control means When key switch 48 is on and cooler SW 38 is on
When the temperature switch 49 is turned on, the cooler 44
So that the cooler compressor is turned on (cooled).
The clutch 66 is turned on and the engine E and cool
And the air compressor 67 is engaged. In this cooler-on state and when the idle switch
When the switch 25 is on, the engine idle speed Ns
Increased cooler idle speed Nsc, equivalent to cooler load
The engine output is increased by
The state is called an idle up state. ). iii) Idle up prohibition means M3 and cooler compressor
Function as a cooler operation control prohibiting means Even if the condition of the cooler on state is satisfied in the idle state,
When each of the conditions III is satisfied, the idle-up system
Prohibit transition to idle-up state in control means M2
The idle speed Ns according to the cooling water temperature
Hold at Ns (TW). (1) Detects the vehicle speed, and the vehicle speed exceeds the set value (2.0 km / h)
When big. (2) Detecting clutch engagement or gear shifting
Thus, the engine E and the drive mechanism 45 of the vehicle are connected.
When or when the join is predicted (join preparation). (3) For automatic transmission vehicles,
For cases other than P range and N range. (4) Both the first and third terms are satisfied at the same time
Case. In the case of the above-mentioned items 1-4, the cooler SW38 is
Vehicle speed changes even when switched from off to on
And there is a possibility that engine power may increase.
In other words, the transition to the idle-up state is prohibited.
You. Also, the engine speed Nf is equal to the set speed (for example, 900r
pm) In the following, when the above condition III is satisfied,
Is already idle if it is in the up state
Continue idle-up state and idle-up state
If not, prohibit idle-up and
Release the compressor clutch 66 and release the compressor.
The engine speed decreases due to the load and vibration occurs.
(Hereinafter referred to as an add-up prohibition letter)
State. ). iv) Idle-up prohibition canceling means M4 and cooler comp
Function as Lesser Operation Control Prohibition Canceling Means Condition III is satisfied by the idle-up prohibiting means M3 described above.
When it is established and becomes idle up prohibition state,
When the engine output is large and the following condition IV is satisfied:
Release the idle-up prohibition state,
Up (hereinafter referred to as idle up prohibition solution
It is called a removal state. ). (1) When the engine speed is equal to or higher than the set value. (2) The amount of air from the air flow sensor 16 exceeds a certain value.
Case. In the above condition IV, the engine associated with the cooler-on state
Because the increase in gin output is relatively small relative to the total output,
Judging that it does not lead to sudden change in vehicle speed, engine output
And turn on the cooler compressor clutch 66
State. As shown in FIG. 16, in the second embodiment of the present invention,
Engine speed sensor (igniter) 17
Engine speed Ne from vehicle and low vehicle speed signal from vehicle speed sensor 24
Signal (high-level signal at 2 km / h or less), cooler switch 3
Cooler on / off signal from 8, inhibitor switch 39
The non-engagement (P range, N range) signals
It has become. In the controller 29, the cooler-on signal is sent to the AND circuit 50.
Signal and the current cooler idle up signal Cup
To maintain the cooler idle-up state
Idle up signal Cup ₁ And outputs the OR circuit 55
Through the transistor 62, the idle-up mechanism (for example,
The differential pressure responsive actuator 43 shown in FIG. 14 is in the ON state.
(Cooler idle up state). In addition, the cooler-on signal and the low vehicle speed signal are input to the AND circuit 51.
And the cooler idle up state
Cooler idle up signal Cup _Two Is output or
Idle-up mechanism via paths 56 and 55 and transistor 62
43 is turned on. Further, the cooler-on signal and the non-engagement signal
And the cooler idle up state
Cooler idle up signal Cup _Three Is output or
Idle-up mechanism via paths 56 and 55 and transistor 62
43 is turned on. In addition, a cooler idler output signal of the OR circuit 55 is provided.
After the delay time elapses via the delay 61, the
Cooler-on signal C via OR circuit 58 and transistor 63
on to cooler compressor clutch relay 42
This allows the cooler compressor clutch relay 42
The ON state (engagement state) is set. Then, the igniter 17 is supplied to the comparator 60 as a comparing unit.
The actual engine speed Nf signal and the setting
Engine speed (here, 900 rpm) signal and Nf
When the engine speed is ≥900rpm, a high engine
The rotation speed signal Nh is output to the AND circuit 53, and the AND circuit 53
Receives the cooler-on signal and the high engine speed signal Nh.
When the cooler compressor clutch on signal Con ₁ To
Output, via the OR circuits 57, 58 and transistor 63,
The relay 42 for the cooler compressor clutch is turned on (
State). In addition, the cooler compressor crack
When receiving the Thion signal Con and the Cooler-on signal,
-Cooler compressor clutch
Signal Con _Two And OR circuit 57, 58, transistor 63
Via relay 42 for cooler compressor clutch
Turn on. The symbols 64 and 65 in FIG. 16 represent Zener diodes.
Is shown. With the above-described configuration, the second embodiment of the present invention provides the first embodiment.
Almost the same effects as those of the embodiment can be obtained. Further, as shown in FIG. 17, in the third embodiment of the present invention,
Are the AND circuit 54 and the OR circuit 5 in the second embodiment.
7,58 is omitted and the output of delay 61 is directly transposed.
To an AND card 53 and an OR circuit 56.
The output is supplied to the OR circuit 55 via the OR circuit 59
The other configuration is almost the same as that of the second embodiment.
The same is true. Thus, in the third embodiment, the engine speed is 900 r.
Above pm, related to vehicle speed, inhibitor switch, etc.
Immediately when the cooler on signal of the cooler switch is input.
Raid up is performed. Other operational effects of this embodiment include the first and second embodiments.
Almost the same as the embodiment is obtained. The target throttle opening θs of this embodiment is
Dollar target throttle opening and cooler idle up
The target throttle opening is appropriately switched and controlled.
However, when the opening of the throttle valve decreases,
To prevent a large amount of unburned gas from being generated.
Throttle opening gradually without decreasing the throttle opening
You can set a dashpot mode to reduce
Target throttle opening in this dashpot mode
May be obtained from a map or the like. The problem of the occurrence of each interrupt signal is an example. In this embodiment, a pair of electromagnetic fuel injection valves having different capacities
9 and 10 always operate, and control of the injection time width
The fuel injection amount is controlled by
It is possible to switch between the two injectors 9 and 10 as necessary.
You may. [Effects of the Invention] As described in detail above, the vehicle cooler idle of the present invention.
According to the up control device, the following effects or advantages can be obtained.
can get. (1) Cooler controller corresponding to the command signal of cooler switch
Activate the presser and activate this cooler compressor
Idle up to respond to
Even during idling, the cooler command signal
The cooler compressor in response to the
In the vehicle cooler idle-up control device
Engine or vehicle drive mechanism or its preparation
Condition is detected, the idle-up device operates.
Changes in engine speed due to
The engine output does not fluctuate,
No movement occurs. At that time, the load increase side of the compressor
Change in engine speed is also prohibited, so the engine speed may drop.
Prevents engine stalls and vibrations
Is stopped. (2) According to the first item, the safety of the vehicle is improved. (3) When coupling clutches and transmissions as in conventional devices
Release the idle-up that is already in operation.
Engine with cooler idle up control means
By prohibiting the change of the rotation speed to the increasing side,
(1) and (2) are configured so that the effects can be achieved.
The idle-up that is already being executed is performed regardless of whether the connection is detected.
Idle up time during cooler operation maintained as it is
And the cooling capacity is secured, and the clutch
Whenever the gearbox or transmission is engaged or disengaged, idle-up
Drivability because the release is not repeated
And the probability of occurrence of engine stall is also reduced. (4) Engine speed or engine load exceeds the set value
However, in driving conditions that do not lead to sudden changes in vehicle speed,
Prohibition of changing engine speed to higher side and cooler
Prohibition of changing the presser from the non-operating side to the operating side
Is also released, and the operation of the cooler compressor is given priority.
Therefore, the response to the cooling request becomes more accurate.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 15 show a vehicle cooler idle-up control device as a first embodiment of the present invention. FIG. 1 is an overall configuration diagram, and FIG. FIG. 7A is a configuration diagram, and FIGS.
(B) and FIGS. 8 to 12 are flow charts for explaining the operation thereof, FIG. 13 is a flow chart in which a part thereof is modified, and FIGS. FIG. 16 is a block diagram showing a vehicle cooler idle-up control device as a second embodiment of the present invention, and FIG. 17 is a vehicle cooler idle-up control device as a third embodiment of the present invention. FIG. DESCRIPTION OF SYMBOLS 1 ... Intake passage, 2 ... Exhaust passage, 3 ... Turbocharger, 4 ... Turbine, 5 ... Compressor, 6 ... Wastegate valve, 7 ... Pressure response device, 8 ... Intercooler, 9,10 …… Electromagnetic fuel injection valve, 11 …… Throttle valve, 11a …… Shaft, 11c …… Throttle lever, 11d ……
Throttle lever end, 12 ... Actuator, 13 ...
Motor, 14a …… worm, 14b …… worm wheel,
14c: Pipe shaft, 14d: Female thread, 15: Rod as stopper member, 15a: Male thread, 15b: Slot, 16
…… Air flow sensor, 17 …… Engine speed sensor (igniter), 18 …… Intake air temperature sensor, 19 …… Atmospheric pressure sensor, 20 …… Throttle sensor, 21 …… Water temperature sensor, 22
…… O ₂ sensor, 23 …… Knock sensor, 24 …… Vehicle speed sensor as coupling sensor, 24a …… Reed switch, 25 ……
Idle switch (ID.SW) as idle sensor, 2
6 ... Cranking switch, 27 ... Crank angle sensor, 28 ... Motor position switch as position sensor, 29 ... Controller, 30 ... Power transistor, 31 ... Catalyst converter, 32 ... Ignition coil, 33 ... ... Distributor, 34 ... Solenoid switching valve, 35 ... Display gauge, 35a ... Needle display, 35b ... Segment display, 36 ... Ignition key switch, 37
…… Battery, 38 …… Cooler switch (cooler SW), 39
... Inhibitor switch as coupling sensor, 40 ... Setting device, 42 ... Cooler compressor clutch relay (cooler relay), 43 ... Idle-up mechanism, 43a ... Solenoid, 44 ... Cooler, 45 ... Driving mechanism , 46 …… Clutch switch (clutch SW) as coupling sensor, 47…
... Shift stage sensor as coupling sensor, 48 ... Key switch, 49 ... Temperature switch, 50-54 ... And circuit, 55-
59 ... OR circuit, 60 ... Comparator as comparison unit, 61 ...
Delay, 62, 63 ... Transistor, 64, 65 ... Zener diode, 66 ... Cooler compressor clutch, 67 ...
... Compressor for cooler, 68 ... Pulley mechanism, 69 ... Spark plug, E ... Engine for vehicle, M1 ... Idle speed control means, M2 ... Cooler idle up control means, M3
... Idle up prohibition means, M4 ... Idle up prohibition release means.

Continuation of front page    (72) Inventor Kazumasa Iida               1 Mitsubishi Azuma Tatsumachi, Ukyo-ku, Kyoto-shi               Inside the Kyoto Works                (56) References Jikken Sho 54-30737 (JP, Y2)

Claims (1)

(57) [Claims] A cooler compressor driven by the engine, a cooler switch for issuing a command signal for operating the cooler compressor, a cooler operation control means for outputting a control signal for operating the cooler compressor when a command signal for the cooler switch is issued, Cooler idle-up control means for outputting a control signal for increasing the idle speed of the engine to the engine speed adjusting element when a command signal of the cooler switch is issued, or a coupling state between the engine and a drive mechanism of the vehicle or A coupling sensor for detecting the preparation state of the coupling, prohibiting the cooler idle-up control means from changing the engine rotational speed to the increasing side in accordance with a detection signal from the coupling sensor, and controlling the cooler compressor by the cooler operation control means. Operation from non-operation side to operation side Characterized in that includes a prohibition means for prohibiting a change of state, the vehicle cooler idle-up control device. 2. When the coupling sensor receives a detection signal from a vehicle speed sensor that detects the speed of the vehicle and detects a vehicle speed greater than a low-speed traveling state setting signal of the vehicle, detects a coupling state between the engine and a driving mechanism of the vehicle. 2. The vehicle cooler idle-up control device according to claim 1, wherein the vehicle cooler idle-up control device is configured to perform the following. 3. A cooler compressor driven by the engine, a cooler switch for issuing a command signal for operating the cooler compressor, a cooler operation control means for outputting a control signal for operating the cooler compressor when a command signal for the cooler switch is issued, Cooler idle-up control means for outputting a control signal for increasing the idle speed of the engine to the engine speed adjusting element when a command signal of the cooler switch is issued, or a coupling state between the engine and a drive mechanism of the vehicle or A coupling sensor for detecting the preparation state of the coupling, prohibiting the cooler idle-up control means from changing the engine rotational speed to the increasing side in accordance with a detection signal from the coupling sensor, and controlling the cooler compressor by the cooler operation control means. Operation from non-operation side to operation side Inhibiting means for inhibiting a change in state, characterized in that comprising a prohibition canceling means for canceling the prohibition operation of the inhibiting means when the engine speed or the load exceeds the set value, the vehicle cooler idle-up control device.