JPS63305798A - Controller for generator - Google Patents

Abstract

PURPOSE:To conduct control by an engine brake smoothly and effectively by increasing the quantity of power generation of a generator when the position of the number of speed is positioned at the position of a high speed step on the engine brake and inhibiting the quantity of generation of the generator when the position of the number of speed is positioned at a low speed step. CONSTITUTION:When a driver releases an accelerator pedal for deceleration, a throttle valve transfers to a closed state, and a throttle sensor 21 outputs a signal at a level '1'. When the position of the number of speed is positioned at third speed and fifth speed having small reduction gear ratios at that time, a speed-number sensor 22 outputs a signal at a level '0', and an engine control unit 7 closes a switch for a relay circuit section 9, and the quantity of generation by an alternator 5 is increased. When the position of the number of speed is positioned at first speed or second speed, the speed-number sensor 22 outputs the signal at the level '1', thus resulting in no operation of the relay circuit section 9 by the engine control unit 7.

Description

[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) The present invention relates to a device for controlling a power generation layer of a vehicle generator,
In particular, the vehicle generator uses the load on the engine to make engine braking more effective and comfortable! Regarding the ilJ all device.

(Prior Art) Mechanical and hydraulic brake devices have conventionally been used as means for controlling the speed of a running vehicle, decelerating it to a desired speed, or stopping it at a predetermined position. Furthermore, in vehicles with manual transmissions (M/T vehicles), when going down a slope, it is possible to use so-called engine braking, which applies Ill by taking your foot off the accelerator pedal without disengaging the clutch. did it.

This engine brake uses the driving wheels of a running vehicle to rotate the engine, and utilizes the activities of various parts of the engine and resistance such as rotational friction to brake the rotation of the drive shaft and reduce the traveling speed. It could also be used in conjunction with a brake system.

Furthermore, the braking force of this engine brake varies depending on the position of the gear position used when using the engine brake. For example, in the high speed gear of 5th gear, the braking force is only a small amount, and the braking force is only a small amount when the engine brake is used. While the brakes cannot be expected to be effective, we were able to obtain a strong υ1e force in the low first gear.

On the other hand, in vehicles such as motorcycles and motorcycles, the engine is used as a power supply source for various electrical loads such as a starter used when starting the engine, lighting equipment such as headlamps, or a storage battery (battery). A power generation II (generator) that generates electricity,
A voltage regulator that has the function of controlling the generated voltage of this generator, supplying appropriate power to the above-mentioned electrical load, and properly charging the storage battery! Equipped with a power supply device consisting of (voltage regulator) and storage battery, the above-mentioned! ! When the amount of power generated by the machine was less than the above-mentioned electric load, the storage battery discharged and served as a power source, and when the amount of power generated was greater than the load, the generator worked as a power source and also charged the storage battery. (Unexamined Japanese Patent Publication No. 106397/1983) (Problem to be solved by the invention) Power generation by a generator using this engine as a drive source requires driving energy commensurate with the amount of power generated. As the amount of power generation increased, the load on the engine also increased.

Therefore, when braking is applied using the engine brake, the load applied to the engine differs depending on the amount of power generated by one engine, which in turn causes a difference in the braking force of the engine brake, especially when the amount of power generated is large. When engine braking is used, a braking force greater than expected is applied to the drive wheels, making it difficult to achieve smooth braking.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an IUI control device that can smoothly and effectively perform ilJ by engine braking by controlling the load on the engine caused by the generator.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides an i
In the ti11wJ device, the throttle sensor outputs a predetermined signal when the degree of opening/closing of the throttle valve is less than a predetermined value, or when the throttle valve is in a transition state toward the closed position, and the gear position detection sensor outputs a predetermined signal when the degree of opening/closing of the throttle valve is below a predetermined value, and the gear position detection sensor outputs a predetermined signal when the degree of opening/closing of the throttle valve is less than a predetermined value, and the gear position detection sensor outputs a predetermined signal when the degree of opening/closing of the throttle valve is less than a predetermined value or when the throttle valve is in a transition state toward the closed position. When a predetermined signal is output when the stage position is a high-speed stage position, the power generation amount of the generator is increased, and the throttle sensor detects that the degree of opening and closing of the throttle valve is less than a predetermined value or is in a transition state toward the ■ position. When the gear position detection sensor detects that the gear position of the transmission is in a low gear position, the generator is configured to suppress the amount of power generated or an increase in the amount of power generated by the generator. did.

(Function) The FF111 control device according to the present invention uses a throttle sensor and a gear stage detection sensor to increase the power of the generator when the engine brake speed gear position is in the high gear position, and to increase the power generation when the engine brake speed gear position is in the low gear position. Control by engine braking is performed smoothly and effectively by suppressing the amount of power generated by the machine.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a circuit diagram partially using a block diagram to illustrate the configuration of this embodiment.

A dynamo or alternator 5 is usually used as a generator for a vehicle. The dynamo described above is of a commutator rectification type, and the alternator 5 is of a semiconductor rectification type which full-wave rectifies the AC output of the three-phase alternating current generator using a rectifier diode 55 and outputs a DC i4 current. This embodiment will be described using an alternator 5 which has excellent performance and durability and is widely used in vehicles.

This alternator 5 is a rotating field type generator in which magnetic poles rotate, and the alternator armature coil (armature'
j1m) Take out the AC output from 51. That is, current is passed through the alternator field coil (field winding) 53 wound around the rotor core, the rotor is magnetized, and the AC 1 m pressure generated in the alternator armature coil 51 by the rotation of this magnetized rotor is taken out. It is.

Further, the AC WI current is rectified into DC current by the rectifier diode 55, and the voltage generated at this time is applied to the battery V.
When the pressure is higher than the Cl pressure, the battery VC is charged.

The power generation amount @ control means 4 determines the output I! of the alternator 5 when supplying electric power to the electric load RO and the battery Vc! A means for adjusting the voltage to an appropriate voltage, the alternator 5
Voltage control is performed by detecting the output voltage of the alternator or the terminal voltage of the battery Vc and controlling the field current flowing through the alternator field coil 53,
Also called a voltage regulator. There are contact type and semiconductor type as voltage control methods, and in this embodiment, a semiconductor type using transistors which are small and have excellent performance and durability will be explained.

Hereinafter, the basic configuration of the sending 21mIIIwIJ means 4 will be explained along with its function.

When the ignition switch K is turned on, the charge warning lamp CL lights up and the transistor Tr2 is turned on, so that the transistor Tr3 is also turned on, and the initial excitation current flows from the battery VC to the alternator field coil 53, and the rotor is magnetized. . When the engine starts [the coater starts rotating, the top! The rotation of the magnetized rotor generates an AC voltage in the alternator armature coil 51, and when the voltage at the cathode side output terminal of the auxiliary diode 57 becomes equal to the terminal voltage of the battery VC due to the start of this power generation, the charge warning lamp CL is activated. goes out, and the field IW current is supplied via the auxiliary diode 57.

Further, when the voltage generated in the alternator armature coil 51 exceeds the voltage set by the resistors Rr, R2 and the Zener diode (constant voltage diode) ZD, the small signal transistor Tr3 is turned on, and the transistor T' is turned on by turning off the transistor Tr2. 1 is turned on. At this time, the output voltage gradually decreases due to a decrease in field current until transistor Tr+ is turned on again, and the load on the engine due to the power generation of alternator 5 also decreases.

When the output voltage drops below the voltage set by the Zener diode ZD, etc., the transistor T
r+ is turned on and power generation begins.

Hereinafter, the constituent parts of this embodiment according to the present invention will be explained.

The engine brake detection means 2 detects a state in which the accelerator pedal is released while the vehicle is running, the engine is rotated in the opposite direction at the drive wheels, and the drive wheels are braked by the load of the engine.
That is, it detects the engine braking state, and consists of a throttle sensor 21 and a gear stage detection sensor 22.

The throttle sensor 21 detects the degree of closing of the throttle valve in the carburetor, which opens and closes in conjunction with the accelerator pedal to adjust the intake amount of the air-fuel mixture, that is, the engine output, and determines whether the throttle valve is in the closed or closed state. When the engine brake is shifting to , it is assumed that engine braking is being used and a detection signal of level "1" is output.

The gear position detection sensor 22 outputs an output signal of level "1" when the gear position of the transmission is the low gear position of the first and second gears, and outputs an output signal of level "1" when the gear position of the transmission is in the low gear position of the first gear and the second gear, and outputs an output signal of level "1" when the gear position of the transmission is low, such as the neutral (
N), or outputs an output signal of level "0" when the vehicle is in a high speed stage such as third, fourth, or fifth speed.

The engine control unit 7 comprehensively controls the engine's fuel injector, ignition timing, etc. based on signals from various sensors such as a temperature trend sensor, pressure sensor, or oxygen Jl(02) sensor, and also controls the engine's fuel injector, ignition timing, etc. 21 and the output signal of the gear stage detection sensor 22, the power generation limit of the generator 5 is adjusted to l1lill.

The relay circuit section 9 receives the 1IJII1 signal from the engine control unit 7 and drives a relay switch that connects the resistor R3 in parallel to the resistor R2. In this embodiment, the engine control unit 7
When receiving a control signal for increasing the amount of power generation at level "1", the relay switch is turned on (inactive) and reduces the resistance valve of the resistor R2, thereby increasing the power output of the small signal transistor Tr.
3 is turned off.

FIG. 3 is a flowchart for explaining the operation of the circuit diagram of this embodiment shown in FIG.

The above flowchart will be explained below in rm*.

Engine brake detection signal QLI is throttle sensor 21
detects the usage status of engine brake and becomes level “1”
This indicates that a detection signal of

The gear position detection signal L2 indicates that a detection signal of level "1" is output when the gear position 1fL3 is in the first and second speeds, and a level rOJ is output when the gear position 1fL3 is in the third to fifth speeds. .

The start 1!11 increase signal L4 is generated when the engine brake detection signal L1 is level "1" and the gear position detection signal 1-2.
When is level "0", fire 1! This indicates that the I increase signal becomes level "1".

It should be noted that this FIG. 3 shows the relative relationship of each signal, and does not necessarily show the actual running condition.

Next, the operation of this embodiment will be explained.

When a driver gets into a manual transmission vehicle equipped with the device of this embodiment and turns on the ignition switch K,
The generator control device 11 is activated, and the A° alternator 5 is also driven by the engine to start generating electricity.

When the driver operates the accelerator pedal, transmission, and clutch to drive the vehicle, and then releases the accelerator pedal to further decelerate, the throttle valve shifts to the open state.
The throttle sensor 21 detects this open state, and the level "
1" detection signal is output.

At this time, the gear position is from 3rd gear to 5th gear with a smaller reduction ratio.
(4th speed in the case of a 4-speed manual transmission vehicle), the gear position detection sensor 22 outputs a signal of level "0", and the engine control unit 7 closes the switch of the relay circuit section 9 to open the resistor. By connecting R3 in parallel with the resistor R2, the potential on the cathode side of the Zener diode ZD is lowered to below the Zener voltage, the small signal transistor Tr3 is turned off, and the field current flowing through the alternator field coil 53 is increased. Increase the amount of power generated by 5.

Therefore, the load on the engine by the alternator 5 increases, and the braking effect of the engine brake increases.

Furthermore, when the gear position is the first or second gear, the gear position detection sensor 22 outputs a signal of level "1", so the engine control unit 7 does not operate the relay circuit section 9, and therefore the alternator Since the power generation m of the alternator 5 does not change, the engine torque consumed by the alternator 5 also does not change. Therefore, since the braking force caused by the engine brake does not change, excessive effectiveness of the engine brake is eliminated, and smooth operation of the engine brake can be expected.

In this embodiment, the gear position detection signal is set to the level "
Although the two values are ``1'' and ``0'', the value is not limited to this, and values corresponding to 1st to 5th speeds may be output in 2 to 5 steps, and furthermore, the values corresponding to the gear position may be output. When the vehicle is in the first or second speed, a variable resistor R may be connected in parallel to the resistor R1, so that braking can be performed in consideration of the current amount of electricity used and the amount of downhill slope.

[Effect of the Invention J As explained above, according to the present invention, the throttle sensor and the gear position detection sensor are used to increase the amount of power generated by the generator when the gear position is at the high gear position during engine braking, Since the power generation of the generator is suppressed when the engine is in low gear, even beginners can easily and efficiently brake the vehicle smoothly by using the engine brake. It is something to play.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram corresponding to claims, FIG. 2 is a circuit diagram showing an embodiment of the present invention, and FIG. 3 is a timing chart for explaining the operation of FIG. 1... Generator feed WJ device 2... Engine brake detection means 3... Power generation amount detection means 4... Power generation control means 5... Alternator 7... Engine control unit 9... Relay circuit section

Claims (1)

[Claims] (1) In a control device that controls the amount of power generated by a vehicle generator that is driven by an engine and generates power, a throttle sensor detects a transition state when the degree of opening and closing of the throttle valve is below a predetermined value, or when the throttle valve is in a transition state toward the closed position. , and when the gear position detection sensor outputs the predetermined signal when the gear position of the transmission is the high gear position, the power generation amount of the generator is increased, and the throttle When the sensor detects that the degree of opening and closing of the throttle valve is less than a predetermined value or is in a transition state toward the closed position, and the gear position detection sensor detects that the gear position of the transmission is at the low gear position. . A generator control device, characterized in that the generator is configured to suppress the amount of power generated or an increase in the amount of power generated by the generator.