CN1165243A - AC-CDI ignition device - Google Patents

Abstract

Provides an AC-CDI type ignition device that can start or stop an automobile engine by turning on and off a DC-CDI main switch with 1 circuit and 2 contacts. The AC-CDI type ignition device 1 includes a DC-CDI main switch 2, an AC-CDI unit 3, an alternator 6, a regulating rectifier 7, a battery 8, a pulse generator coil 10, an ignition coil 11, and an ignition spark plug 12. The AC-CDI unit 3 is composed of an ignition control device 4 and a coil drive device 5 .

Description

AC-CDI ignition device

The present invention relates to an AC-CDI ignition device, which uses a DC-CDI main switch with 1 circuit and 2 contacts instead of a 2-circuit 2-contact AC-CDI main switch, and can start a car when the CDI main switch is normally operated. Engine AC-CDI ignition.

FIG. 7 shows a block diagram of a main part of a conventional AC-CDI type ignition device.

In Fig. 7, an AC-CDI (CAPACITIVE DISCHARGE IGNITION) type ignition device 30 has an AC-CDI main switch 31, an AC-CDI unit 32 including a disconnecting device, an alternator 33, a regulating rectifier 34, a battery 35, and a pulse generator. Torch coil 37, ignition wire diagram 38, spark plug 39.

The AC voltage V _e of the field coil of the alternator 33 is used to drive the ignition coil 38 and the AC voltage V _c of the load coil is used to charge the battery 35 via the regulating rectifier 34 .

The pulse generator coil 37 detects the timing of igniting the spark plug 29, and supplies the pulse signal S30 to the AC-CDI unit 32.

The pulse generator coil 37 detects the timing of igniting the spark plug 39 and supplies the pulse signal S30 to the C-CDI unit 32 .

The AC-CDI unit 32 outputs a coil driving signal S31 according to the pulse signal S30 to drive the ignition coil 38 to ignite the spark plug 39 .

The AC-CDI main switch 31 is composed of a 2-circuit 2-contact switch interlocked with two 1-circuit 2-contact switches, and one of the 1-circuit 2-contact switches is used to short-circuit the high-voltage primary side of the ignition coil 38 to forcibly stop the spark plug 39. Ignite to ground the input of the disconnecting device, or open the input of the disconnecting device to drive the ignition coil 38 to place the spark plug 39 in an ignitable state, and another 1-circuit 2-contact switch turns on or cuts off the direct current load (DC) to the car. load) DC voltage V _b supplied by the battery 35 .

In this way, the AC-CDI type ignition device uses the AC voltage V _e of the excitation coil of the alternator as the voltage for driving the ignition coil, and performs the on-off operation of the main switch for AC-CDI composed of two circuits and two contacts. Ignition device for starting or stopping a car engine.

However, the conventional AC-CDI type ignition device has the problem that it is necessary to use a large and expensive 2-circuit 2-contact main switch for AC-CDI with a complicated 2-circuit interlocking mechanism, and it is not possible to use a low-cost main switch with The main switch for AC-CDI with one circuit and two contacts with a simple mechanism cannot use the main switch for DC-CDI with one circuit with two contacts at a low price and with a simple mechanism.

In addition, there is also an automobile engine ignition device proposed in No. 7-252232 by the applicant of the present invention. In this automobile engine ignition device, in order to prevent the engine from starting due to abnormal operation of the CDI main switch, the CDI A non-linear circuit is assembled inside the main switch, and the non-linear circuit is activated by the ON operation of the main switch through the CDI, and a specific voltage or current is generated, and the engine is started only when the specific voltage or current is detected.

However, in the conventional AC-CDI type ignition device, there is such a problem that since the main switch for AC-CDI has a complicated 2-circuit interlocking mechanism, it is difficult to install it inside the main switch for AC-CDI. A non-linear circuit that starts the engine due to abnormal operation.

The present invention is made to solve the above-mentioned problems in the prior art. The first object is to provide an AC-CDI system capable of starting or stopping an automotive engine by turning on and off a CD-CDI main switch with 1 circuit and 2 contacts. ignition device.

The second object is to provide an AC-CDI type ignition device capable of incorporating a non-linear circuit inside a 1-circuit, 2-contact DC-CDI main switch and preventing the engine from starting due to abnormal operation.

The AC-CDI type ignition device of claim 1 is characterized in that: a main switch for DC-CDI is used, and the DC voltage of the battery is supplied to the AC-CDI unit according to the ON operation of the main switch for DC-CDI, and in addition, the AC-CDI There is also an ignition control device in the unit, which makes the AC-CDI unit into an operable state according to the DC voltage of the battery.

The AC-CDI type ignition device of the present invention uses the main switch for DC-CDI, and supplies the DC voltage of the battery to the AC-CDI unit in accordance with the ON operation of the main switch for DC-CDI. In addition, the AC-CDI unit also has An ignition control device that makes the AC-CDI unit operable with the DC voltage of the battery, so the engine can be started by turning on the DC-CDI main switch.

The AC-CDI ignition device of claim 2 is characterized in that the AC-CDI unit of the AC-CDI ignition device described in claim 1 has a battery voltage detection device and an ignition signal generation device, and the AC-CDI ignition device is cut off by the DC-CDI main switch. Operating the short-circuit excitation coil makes the AC-CDI unit inoperable.

The AC-CDI ignition device of the present invention has a battery voltage detection device and an ignition signal generating device in the AC-CDI unit of the AC-CDI ignition device described in claim 1, and the DC-CDI main switch is disconnected. In this state, the exciting coil is short-circuited to make the AC-CDI unit inoperable, so the automobile engine can be stopped by turning off the main switch for DC-CDI.

The AC-CDI type ignition device of claim 3 is characterized in that a non-linear circuit is provided in the main switch for DC-CDI of the AC-CDI type ignition device described in claim 1, and the DC-CDI type ignition device is turned on by the main switch for DC-CDI. The non-linear circuit action generates a predetermined signal. In addition, there is a detection device for the signal generated by the non-linear circuit in the AC-CDI unit, and the AC-CDI unit becomes operable only when the predetermined signal number is detected by the detection device. .

The AC-CDI type ignition device of the present invention has a non-linear circuit in the DC-CDI main switch of the AC-CDI type ignition device described in claim 1, and operates the non-linear circuit by connecting the DC-CDI main switch. A predetermined signal is generated, and the AC-CDI unit is equipped with a detection device for a signal generated by a nonlinear circuit, and the AC-CDI unit becomes operable only when the detection device detects a predetermined signal, so it is possible to prevent abnormal Operate to start the engine.

The AC-CDI ignition device of claim 4 is characterized in that a non-linear circuit is provided in the DC-CDI main switch of the AC-CDI ignition device described in claim 1, and the DC-CDI main switch is turned on to use the AC-CDI ignition device. A predetermined DC constant voltage is generated by the non-linear circuit operation, and the DC constant voltage is used as a power supply for the control device of the AC-CDI unit.

The AC-CDI type ignition device of the present invention has a non-linear circuit in the DC-CDI main switch of the AC-CDI type ignition device described in claim 1, and the non-linear circuit is activated by turning on the DC-CDI main switch. The operation generates a predetermined DC constant voltage, and uses the DC constant voltage as the power supply of the control device of the AC-CDI unit, so that the engine can be prevented from starting the engine in abnormal operation.

Fig. 1 is a structural block diagram of main parts of the AC-CDI type ignition device of the present invention.

Fig. 2 is a circuit structure diagram of the AC-CDI unit of the present invention.

Fig. 3 is a structural block diagram of main parts of the AC-CDI unit of the present invention.

Fig. 4 is a structural block diagram of main parts of the AC-CDI unit of the present invention.

Fig. 5 is a structural block diagram of main parts of the AC-CDI unit of the present invention.

Fig. 6 is a structural block diagram of main parts of the AC-CDI unit of the present invention.

Fig. 7 is a block diagram showing the configuration of main parts of a conventional AC-CDI type ignition device.

The present invention is explained below on the basis of the embodiments shown in the drawings.

Fig. 1 is a structural block diagram of main parts of the AC-CDI type ignition device of the present invention.

In Fig. 1, AC-CDI (CAPACITIVE DISCHARGE IGNITION) type ignition device 1 has DC-CDI main switch 2, AC-CDI unit 3, alternator 6, regulating rectifier 7, battery 8, pulse generator coil 10, ignition The coil 11 , the ignition plug 12 , and the AC-CDI unit 3 are composed of an ignition control device 4 and a coil drive device 5 .

The AC voltage V _e of the exciting coil of the alternator 6 is used to drive the ignition coil 11 and is supplied to a terminal T ₁ of the coil driving device 5 .

The alternating voltage V _c of the load coil is used to charge the battery 8 via the regulating rectifier 7 .

The main switch 2 for DC-CDI is a 1-circuit 2-contact switch with a changeover contact structure, and can apply the direct current V _b (12v) of the battery to the terminal T 2 of the ignition control device 4 of the AC-CDI unit ₃ through the ON operation The ignition control device 4 is brought into an operable state, and the terminal _T2 of the ignition control device 4 is also brought into an open state by a cut-off operation.

The pulse generator coil 10 detects the timing of igniting the spark plug 12, and supplies the pulse signal _S1 to the terminal T3 of the ignition control device 4 of the AC-CDI unit ₃ .

The ignition control device 4 becomes operable by turning on the DC-CDI main switch 2 , and outputs a trigger signal S 2 to the coil drive device ₅ based on the pulse signal S ₁ from the pulser coil 10 .

The coil driving device 5 of the AC-CDI unit 3 outputs a coil driving signal S ₃ according to the trigger signal S ₂ to drive the ignition coil 11 to ignite the spark plug 12 and start the engine.

Fig. 2 is a circuit structure diagram of the AC-CDI unit of the present invention.

In FIG. 2 , the AC-CDI unit 3 - 1 is composed of an ignition control device 4 - 1 and a coil drive device 5 .

The terminal _T2 of the ignition control device 4-1 is supplied with the DC voltage _Vb supplied to the battery 8 through the ON operation of the main switch 2 of the DC-CDI, and is supplied to the collector of the transistor _TR1 and the emitter of the transistor _TR2 . The DC voltage becomes the operable state.

When the pulse signal _S1 is applied to the terminal _T3 of the ignition control device 4-1, the transistor _TR1 is turned on, the transistor _TR2 is turned on, and the trigger signal _S2 is output.

The AC voltage _Ve supplied to the excitation coil of the alternator 6 at the terminal _T1 of the coil driving device 5 charges the capacitor _C4 via the diode _D2 .

If the trigger signal S ₂ is added to the control pole of the thyristor SCR ₁ of the coil drive device 5 from the ignition control device 4-1, the thyristor SCR ₁ becomes a conduction state, and the capacitor C ₄ , the thyristor SCR ₁ and In the closed loop formed by the primary side coil of the ignition coil 11 at the terminal _T4 , the charge charged in the capacitor _C4 is discharged, and the spark plug 12 is ignited by the voltage induced in the secondary side coil of the ignition coil 11 .

If the terminal _T2 of the ignition control device 4-1 is in an open state by the cut-off operation of the main switch 2 for DC-CDI, since the collector of the transistor TR ₁ and the emitter of the transistor TR ₂ of the ignition control device 4-1 Since the DC voltage is not applied, the ignition control device 4-1 does not output the trigger signal S ₂ and is in an inoperable state.

In this way, the AC-CDI type ignition device is equipped with an ignition control device in the AC-CDI unit, and the automobile engine can be started or stopped by turning on and off the DC-CDI main switch.

Fig. 3, Fig. 4 and Fig. 5 are structural block diagrams of main parts of the AC-CDI unit of the present invention.

The AC-CDI single charge shown in Fig. 3, Fig. 4, and Fig. 5 is a device that implements preventive measures for preventing the engine from starting due to abnormal operation.

In Fig. 3, the AC-CDI unit 3-2 is composed of a constant voltage source 13, an ignition control device 4-2, and a coil drive device 5. In addition, the ignition control device 4-2 is composed of a battery voltage detection device 14 and a noise cut filter 15. And the ignition signal generating device 16 constitutes.

The constant voltage source 13 generates _{a DC constant voltage V cc from} the AC voltage Ve of the excitation coil, and supplies the DC constant voltage V _cc to the battery voltage detection device 14 and the ignition signal generator 16 .

The battery voltage detecting means 14 outputs the detection signal _S4 to the dot large signal generating means 16 only when the voltage applied to the terminal _T2 by the ON operation of the DC-CDI main switch 2 is a DC voltage _Vb .

The low-pass filter ₁₅ outputs the pulse signal _S5 from which unnecessary high-frequency components have been removed from the pulse signal S1 input to the terminal _T3 to the ignition signal generator 16.

When the battery voltage detection device 14 outputs the detection signal S ₄ to the ignition signal generator 16, the ignition signal generator 16 outputs the trigger signal S ₆ to the coil drive device 5 according to the pulse signal S ₅ when the pulse signal S ₅ is input, and the coil The drive device 5 outputs a coil drive signal S ₇ to the terminal T ₄ based on the trigger signal S ₆ to drive the ignition coil 11 .

When the battery voltage detection device 14 does not output the detection signal _S4 to the ignition signal generator 16, the ignition signal generator 16 has nothing to do with the pulse signal _S5 , so that the potential of the terminal connected to the primary side coil of the ignition coil 11 and _T4 is 0.

When the terminal T ₂ is grounded due to the cut-off operation of the main switch 2 for DC-CDI, since the battery voltage detection device 14 does not output the detection signal S ₄ to the ignition signal generator 16, the ignition signal generator 16 and the pulse signal S ₅ Regardless, the potential of the terminal _T4 connected to the primary coil of the ignition coil 11 is set to 0, and the AC-CDI unit 3-2 is rendered inoperable.

In this way, since the AC-CDI ignition device is equipped with the battery voltage detection device 14 and the ignition signal generator 16 in the AC-CDI unit, and the terminal T2 is grounded by the cut-off operation of the main switch 2 for DC-CDI, it cannot be connected to the terminal _T2 . Voltage is applied to _T2 , and the engine cannot be started due to abnormal operation.

Fig. 4 is a structural block diagram of main parts of the AC-CDI unit of the present invention.

In FIG. 4 , the AC-CDI unit 3 - 3 includes a window comparator 18 , an ignition control device 4 , and a coil drive device 5 .

A zener diode ZD ₂ is installed in the main switch 17 for DC-CDI, and the DC voltage V b of the battery 8 is applied to the terminal T ₂ through the connection operation of the main switch 17 for DC-CDI, and the secondary battery voltage V _b is added to the terminal T ₅ . The DC voltage V _b of 8 minus the voltage V ₁ (V _b −V _z2 ) of the breakdown voltage V _z2 of the Zener diode ZD ₂ .

The window comparator 18 applies a decision signal _S8 to the ignition control means 4 when the voltage _V1 applied to the terminal _T5 is within a predetermined voltage range.

The ignition control device 4 outputs the trigger signal S9 to the coil drive device 5 only when the AND condition of the decision signal _S8 and the pulse signal _S1 input to the terminal _T3 is met, and the coil drive device 5 outputs the trigger signal _S9 to the terminal _T3 according to the trigger signal S9. T ₄ outputs a coil driving signal S ₁₀ to drive the ignition coil 11 .

When the terminal _T5 is grounded by the OFF operation of the DC-CDI main switch 17, if the window comparator 18 judges that the voltage _V1 of the terminal _T5 is not within the predetermined voltage range, the decision signal _S8 is not output to the ignition control device 4.

Therefore, since the AND condition of the pulse signal _S1 input to the terminal _T3 is not satisfied, the trigger signal _S9 is not output, and the AC-CDI unit 3-3 becomes inoperable.

In this way, since the AC-CDI type ignition device is equipped with a window comparator and an ignition control device in the AC-CDI unit, and the terminal _T5 is grounded by the cut-off operation of the DC-CDI switch, it is not possible to apply voltage to the terminal _T5 , and Since the engine cannot be started unless a voltage within the predetermined range is applied to the terminal _T5 , the engine cannot be started due to abnormal operation.

Fig. 5 is a structural block diagram of main parts of the AC-CDI unit of the present invention.

In Fig. 5, AC-CDI unit 3-4 has digital window comparator 21, ignition control device 4, coil driving device 5, and window comparator 21 is composed of A/D converter 22, A/D converter 23 and The battery voltage judging means 24 is constituted.

Zener diode _ZD2 is built into the main switch 17 for DC-CDI, and the DC voltage _Vb of the battery 8 is applied to the terminal _T2 through the ON operation of the main switch ₁₇ for DC-CDI. The DC voltage V _b of the battery 8 minus the voltage V ₁ (V _b −V _z2 ) of the breakdown voltage V _z2 of the Zener diode ZD ₂ .

The DC voltage _Vb at the terminal _T2 is divided by the resistors _R10 and _R11 to generate a voltage _V2 , which is input to the A/D converter 22, converted into a digital signal _{S11, and} then input to the voltage judging device 24.

The voltage _V1 at the terminal _T6 is divided by the resistor _R12 and the resistor _R13 to generate a voltage _V3 , which is input to the A/D converter 23, converted into a digital signal _S12, and then input to the voltage judging device 24.

The voltage judging device 24 has a central processing unit (CPU), and judges whether the input digital signal _S11 and the digital signal _S12 are respectively within respective predetermined ranges, and only the digital signal _S11 and the digital signal _S12 both are within respective predetermined ranges. In the range, the decision signal _S13 is output to the ignition control device 4.

The ignition control device 4 only outputs the trigger signal S14 to the coil drive device ₅ when the AND condition of the decision signal _S13 and the pulse signal _S1 input to the terminal _T3 is met, and the coil drive device 5 outputs the trigger signal S14 according to the trigger signal _S14 . The coil drive signal S ₁₅ is output to the terminal T ₄ to drive the ignition coil 11 .

When _the terminal _T6 is grounded by the cut-off operation of the main switch ₁₇ for DC- _CDI , the window comparator ₂₁ does not set The decision signal _S13 is output to the ignition control device 4 .

Therefore, since the AND condition of the decision signal _S13 and the pulse signal _S1 input to the terminal _T3 is not satisfied, the ignition control device 4 does not output the trigger signal _S14 , and the AC-CDI unit 3-4 becomes inoperable.

In this way, since the AC-CDI type ignition device has a digital window comparator and an ignition control device in the AC-CDI unit, the terminal _T16 is grounded by the cut-off operation of the DC-CDI main switch, so it cannot be added to the terminal _T6 . voltage, also, since the engine cannot be started as long as the voltage within the predetermined range is not applied to the terminal _T2 and the terminal _T6 respectively, the engine cannot be started due to abnormal operation.

Fig. 6 is a structural block diagram of main parts of the AC-CDI unit of the present invention.

In Fig. 6, in order to prevent the engine from starting due to abnormal operation, a resistor R ₉ and a Zener diode ZD ₃ are installed inside the main switch 25 for DC-CDI, and the voltage V _z formed by the ON operation of the switch 25 is The power supply of the control device 26 as the AC-CDI unit 3-5 is shared.

In this way, since there is a non-linear circuit in the DC-CDI main switch of the AC-CDI ignition device in order to prevent the engine from being started due to abnormal operation, the non-linear circuit is activated by the ON operation of the DC-CDI main switch, resulting in The predetermined DC constant voltage is shared as the power supply of the control device of the AC-CDI unit. Therefore, the AC-CDI unit can be miniaturized while preventing the engine from starting due to abnormal operation.

In addition, the above-mentioned embodiment is an example of the present invention, and the present invention is not limited to the above-mentioned embodiment.

The AC-CDI type ignition device of the present invention uses the main switch for DC-CDI, and supplies the DC voltage of the battery to the AC-CDI unit through the ON operation of the main switch for DC-CDI. The ignition control device that can make the AC-CDI unit into an operable state with the DC voltage of the battery can start the car engine by turning on the main switch for DC-CDI, so it can provide a small and economical AC-CDI ignition device.

In addition, the AC-CDI ignition device of the present invention is equipped with a battery voltage detection device and an ignition signal generator in the AC-CDI unit, and the excitation coil is short-circuited by the cut-off operation of the main switch for DC-CDI, so that the AC-CDI can be turned off. The unit is placed in a non-operable state to stop the automobile engine, so it is possible to provide a compact and economical AC-CDI type ignition device.

Furthermore, since the AC-CDI ignition device of the present invention has a non-linear circuit in the main switch for DC-CDI, the non-linear circuit action generates a predetermined signal by the ON operation of the main switch for DC-CDI. The CDI unit is equipped with a detection device for the signal generated by the nonlinear circuit, and only when the predetermined signal is detected by the detection device, the AC-CDI unit becomes operable. Therefore, it is possible to provide a compact, highly reliable and economical anti-theft device. AC-CDI type ignition device.

In addition, since the AC-CDI ignition device of the present invention is intended to prevent the engine from being started due to abnormal operation, a non-linear circuit is incorporated in the main switch for DC-CDI, and the non-linear circuit is activated by turning on the main switch for DC-CDI. The linear circuit operates to generate a predetermined DC constant voltage, and this DC constant voltage is shared as the power supply of the control device of the AC-CDI unit, so a smaller and more economical AC-CDI type ignition device can be provided.

Thus, while preventing the engine from being started due to abnormal operation, a compact and economical AC-CDI type ignition device is provided.

Claims (4)

1. an AC-CDI formula ignition mechanism possesses the CDI main switch between battery and AC-CDI unit, operates in the AC-CDI formula ignition mechanism that makes the engine for automobile starting or stop with the switching of main switch by this CDI, it is characterized in that:

With in the main switch, use the DC-CDI main switch at above-mentioned CDI, with the making operation of main switch the VDC of above-mentioned battery supplied with above-mentioned AC-CDI unit by this DC-CDI,

Above-mentioned AC-CDI possesses ignition control device in the unit, but makes above-mentioned AC-CDI unit become operating state according to the VDC of above-mentioned battery,

2. the AC-CDI formula ignition mechanism recorded and narrated of claim 1 is characterized in that:

Above-mentioned AC-CDI possesses battery voltage detector and distributor pickup mechanism in the unit, and above-mentioned AC-CDI unit being become by above-mentioned DC-CDI with the rupturing operation of main switch can not operating state.

3. the AC-CDI formula ignition mechanism recorded and narrated of claim 1 is characterized in that:

Prearranged signal with the above-mentioned nonlinear circuit action of the making operation of main switch, takes place by this DC-CDI with having nonlinear circuit in the main switch in above-mentioned DC-CDI,

In above-mentioned DC-CDI unit, possess the detection device of the signal of above-mentioned nonlinear circuit generation, but only when detecting this signal, make above-mentioned AC-CDI unit become operating state with this testing circuit.

4. in the AC-CDI formula ignition mechanism that claim 1 is recorded and narrated, it is characterized in that:

Has nonlinear circuit at above-mentioned DC-CDI in main switch, make above-mentioned nonlinear circuit action by this DC-CDI with the making operation of main switch, predetermined dc constant voltage takes place, but make above-mentioned AC-CDI unit become operating state with this dc constant voltage, simultaneously, the power sharing of this dc constant voltage as the control gear of above-mentioned AC-CDI unit.

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