CN2240622Y

CN2240622Y - Pedal type start automatic control circuit for car

Info

Publication number: CN2240622Y
Application number: CN 95217751
Authority: CN
Inventors: 杨红光
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-28
Filing date: 1995-07-28
Publication date: 1996-11-20
Anticipated expiration: 2005-07-28

Abstract

The utility model relates to a pedal type start automatic control circuit for a car, which is composed of a closed command circuit, a switching-off command circuit and an executive circuit, wherein the closed command circuit (which is composed of a switch and a capacitor) is matched with the executive circuit, and thus a main circuit of a car can be effectively controlled to switch on; the switching-off command circuit (which is composed of a delayer, a time delayer and a comparator and can automatically judge the state of engines at any moment and automatically send out a switching-off command) is matched with the executive circuit, and thus, the main circuit of the car can be effectively cut off. The utility model can reduce an ignition operating program of a driver and prevent faulty operation at the same time.

Description

Automobile treadle formula starting automatic control circuit

The utility model relates to the device of a kind of Control of Automobile starting main circuit connecting and disconnecting.Especially automatically Control of Automobile is started the pedal starting automatic control circuit of main circuit connecting and disconnecting.

At present, known vehicle starting circuit divides two-part: main circuit and control circuit.Main circuit is in series by storage battery and starter motor assembly; Control circuit is in series by storage battery, hand-operated normal open switch, relay coil; The contact of relay is connected in the middle of the coil in the magnetic switch on storage battery and the starter motor assembly.When using manual operating normal open switch closure, control circuit is connected, and the relay coil energising makes make contact, magnetic switch energising action on the starter motor assembly, starting circuit is connected, and starter motor is started working, and hand stops to handle, normal open switch automatically resets, control circuit cuts off, and relay contact disconnects, the magnetic switch power-off restoration of starter motor assembly, main circuit cuts off, and starter motor quits work.The deficiency that existing control circuit exists has: one, inconvenient operation, when automobile under steam, after the non-fault of motor is flame-out, must connect control circuit with manually-operated cock again, control the main circuit engine on; Before not starting, driver's hand can not break away from switch.Two, be prone to error operations, limited by storage battery, the starter motor main circuit must not surpass for 5 seconds on time, and the time in this 5 second leans on people's subjectivity to judge and is easy to surpass; Simultaneously, speed change lever often occurs not in neutral position and clutch switch starter closure when not separating fully causes the starter motor overwork, starter motor is burnt.Whether motor is starting when three, starting, and is relied on the sense of hearing and is felt to judge by the driver, so this judgment mode has subjectivity and unreliability.

The purpose of this utility model provides a kind of automobile treadle formula starting automatic control circuit, and it can control being switched on or switched off of starting main circuit easily, prevents the generation of error operations simultaneously.

The utility model is achieved in that it is made of close command circuit, open command circuit, executive circuit three parts.The close command circuit by be installed on the clutch pedal or constitute with a switch and a capacitances in series that clutch is formed interlock, the trigger end of the delay circuit in its end and the executive circuit connects mutually, an end connects mutually with battery terminal negative; The open command circuit is made of delay circuit, delay circuit, comparator, a bit connecting mutually with an input end of comparator, the input end of delay circuit respectively through shaping circuit on automobile ignition coil and the lead that distributor connects mutually.The output terminal of delay circuit connects mutually with the input end of delay circuit, and another input end of the output terminal of delay circuit and comparator connects mutually.Reset terminal in the delay circuit in the output terminal of comparator and the executive circuit connects mutually, and executive circuit constitutes (contact of relay is connected in the middle of the magnetic switch on storage battery and the starter motor assembly) by delay circuit and relay coil.One end of the output terminal of delay circuit and coil connects mutually, and the other end of coil connects mutually with battery terminal negative.Its working procedure is: when the driver needs engine on, only using foot depresses clutch pedal, after clutch separates fully, switch in the close command circuit, circuit produces low level pulse, and this pulse is triggered the delay circuit in the executive circuit and enters unsteady state, output terminal saltus step high level, relay coil has electric current by making the contact adhesive, and the magnetic switch energising on the starter motor assembly is moved and main circuit is connected, and starter motor is started working.Delay circuit in the executive circuit is in during the unsteady state, if do not starting motor, after entering stable state, the output terminal saltus step low level of delay circuit, the relay coil no current is by making the contact separately, and the magnetic switch power-off restoration cuts off main circuit, and starter motor quits work.During being in unsteady state, started motor at delay circuit, the close command circuit picks any two firing pulses that front and back link to each other from the spark coil and the connection lead of distributor, (its numerical value is determined by formula T=60*Z/ (W*n) the unsteady state numerical value that its time lag numerical value must be set less than the delay circuit in the close command circuit, Z represents stroke coefficient, W represents engine cylinder number, n represents the maximum speed that motor can reach under starter motor drives), then comparator two input ends must have low level pulse to arrive simultaneously, its output terminal output low level pulse, this pulse makes that delay circuit enters stable state in advance in the executive circuit, its output terminal is low level, the relay coil breaker point separately, magnetic switch power-off restoration on the starter motor assembly, the starter motor main circuit cuts off, and starter motor quits work.

Owing to adopt such scheme, can reduce independent ignition start programmed sequence of operations of driver, make the driver in the process of stepping on clutch, engage a gear, start motor conveniently, rapidly, reliably, also can prevent the generation of misoperation simultaneously.

The utility model is described in further detail below in conjunction with accompanying drawing and an embodiment:

Figure one is a structured flowchart of the present utility model.

Figure two is that the utility model breaks the instruction circuit structured flowchart.

Figure three is the utility model circuit theory diagrams by an embodiment of two intergrated circuit NE555 main compositions.

In the circuit theory diagrams of figure three illustrated embodiments:

The A point is that automobile ignition coil and distributor high pressure connect any point on the lead among the figure three.

Be installed on the clutch pedal or form the K switch of interlock with clutch and electric capacity (C1) constitutes the close command circuit.

Resistance (R1) end and positive source connect, and the trigger end of delay circuit connects mutually in an end and the executive circuit, prevents that the close command circuit from producing useless negative impulse.

Integrated package (IC1) constitutes the delay circuit in the executive circuit with resistance (R2), electric capacity (C2, C3), and its unsteady state time value is not more than 5 seconds.

Coil (J) is the relay coil in the executive circuit.

Integrated package (IC2) constitutes delay circuit in the close command circuit with resistance (R6), electric capacity (C4, C5), its delay time value is determined by formula T=60*Z/ (W*n), triode (N) constitutes phase inverter with resistance (R3), and resistance (R5) is that current-limiting resistance, diode (D1, D2) constitute two input terminal comparators with resistance (R4).

Resistance (R7, R8, R9) constitutes the shaping input circlult with electric capacity (C6), diode (D3).

Working procedure is: after clutch separates fully, the K closure, integrated package (IC1) trigger end 2 is triggered, output terminal 3 saltus step high level, relay coil has electric current to pass through, and (make contact of its control can make the magnetic switch energising action on the starter motor assembly, main circuit is connected, and starter motor is started working).

After the starter motor work, the firing pulse on the A point constantly arrives the trigger end of integrated package (IC2) and an input end of comparator through shaping circuit.Each firing pulse can make delay circuit be subjected to trigger and enter unsteady state, its output terminal saltus step high level, behind phase inverter, make comparator one end be low level, when it is low level, arrive an end of comparator once more as second firing pulse, illustrate that engine speed has surpassed at following maximum speed that can reach of starter motor drive, motor is starting, and the output of comparator output terminal low level triggers intergrated circuit (IC1), it is resetted, output terminal saltus step low level, coil (J) outage, (the starting main circuit is cut off), in 5 seconds, do not starting motor, after 5 seconds in the executive circuit delay circuit enter stable state, output terminal saltus step low level, coil (J) outage.

Claims

A kind of automobile treadle formula starting automatic control circuit is characterized in that: be made of close command circuit, open command circuit, executive circuit three parts; The close command circuit is by being installed on the clutch pedal or forming with switch and capacitances in series that clutch is formed interlock, and the trigger end of the delay circuit in its end and the executive circuit connects mutually, and the negative pole of an end and storage battery connects mutually; The open command circuit is by delay circuit, delay circuit, comparator, phase inverter constitutes, any point is through the input end of shaping circuit respectively at comparator on the lead that spark coil and distributor connect, the input end of delay circuit connects mutually, the output terminal of delay circuit connects mutually with the input end of delay circuit, the output terminal of delay circuit connects mutually with the input end of phase inverter, another input end of the output terminal of phase inverter and comparator connects mutually, the reset terminal of delay circuit links in the output terminal of comparator and the executive circuit, executive circuit is made of delay circuit and relay coil, one end of the output terminal of delay circuit and coil links, and the other end and the battery terminal negative of coil link.