CN2292907Y

CN2292907Y - Diesel oil cut-off control mechanism of electromagnetic valve for diesel engine

Info

Publication number: CN2292907Y
Application number: CN 96223133
Authority: CN
Inventors: 叶邦恩
Original assignee: YE BANG'EN
Current assignee: YE BANG'EN
Priority date: 1996-12-18
Filing date: 1996-12-18
Publication date: 1998-09-30
Anticipated expiration: 2006-12-18

Abstract

The utility model relates to a diesel oil cut-off control mechanism of electromagnetic valve for a diesel engine. The utility model comprises a battery E, a fuse RD, an electric switch K and a generator with self-hold loop. The utility model is characterized in that the utility model also comprises an electromagnetic valve CDF which is used for controlling a rocking arm YB of an oil cut-off valve of an oil pump, a relay J2 which is used for controlling the electromagnetic valve DCF and is provided with normally open contacts, and a relay J1 which is used for controlling the relay J2 and is provided with normal close contacts. When the utility model is used, the electric switch K only needs to be turn off, which can cause the electromagnetic valve to be turned on; thereby, the oil supply of an oil valve is cut off to cause the engine to carry out automatic flameout, and simultaneously, the utility model provides the prerequisite for realizing the automatic flameout protection of the engine when the temperature and the pressure are exceptional.

Description

Electromagnetic valve oil cut-off control mechanism for diesel engine

The utility model relates to and a kind ofly is used to control motorized vehicles and vessels and engineering machinery with the flame-out solenoid valve cut-off control mechanism of diesel engine.

Diesel engine adopts the ignition by compression mode, diesel engine is flame-out not only will turn off electric switch so make, also must cut off oil pump feed, at present the method that adopts have that steel wire is plug-type, pressurized air controlling type and solenoid valve push button, all need the extra action of doing to turn-off, particularly use the most general plug-type needs of steel wire always with pulling until engine misses, it is very inconvenient to operate, and can not only need the switch electric switch just can light a fire automatically, stop working as petrol engine.

The purpose of this utility model provides a kind of switch that utilizes can automatically control the flame-out solenoid valve cut-off control mechanism of diesel engine with regard to being for the defective that overcomes above-mentioned prior art.

The purpose of this utility model is achieved in that electromagnetic valve oil cut-off control mechanism for diesel engine; comprise storage battery E; safety fuse cutout RD; switch K and by generator windings L1; commutation diode D1～D11; voltage regulator TJ; field coil L2 constitutes band self-keeping circuit's generator; it is characterized in that also including the solenoid valve DCF of a control oil pump oil cut-off valve rocking arm YB; one relay J 1 that is used for control electromagnetic valve DCF and the band relay J 2 of normally opened contact and a control relay J2 and band normally-closed contact; wherein directly be connected on the two ends of storage battery E behind the normally opened contact of solenoid valve DCF and the relay J 2 series connection safety fuse cutout RD; the coil of relay J 2 is connected in series mutually with the normally-closed contact of relay J 1; the voltage output end N contact of one termination generator; the other end ground connection; the coil one end ground connection of relay J 1, the other end one tunnel links to each other through switch K and storage battery E positive pole; another road is connected in above-mentioned N contact through isolating diode D12.

After adopting the utility model, because relay J 2 is subjected to the dual control of generator and switch K, when motor was in running order, the normal fuel injection of fuel tap was kept in not conducting of solenoid valve; When turn-offing electric switch, solenoid valve is followed conducting, cuts off the fuel tap fuel feeding, makes engine misses, thereby realizes only needing to turn-off the purpose that electric switch can make engine misses automatically, and it is extremely convenient to operate; Motor auto extinguishing protection when this control mechanism is also for realization temperature, pressure anomaly simultaneously provides precondition.

Description of drawings: Fig. 1 is circuit theory diagrams of the present utility model.

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As shown in Figure 1; generator windings L1, generator voltage controller TJ, field coil L2 and commutation diode D1-D11 constitute a band self-keeping circuit generator; K is a switch; this is existing a kind of electric generator structure, and when electric switch K turn-offed, field coil L2 still can maintain certain magnetic field; keeping generator works on a period of time; more and more slowly, when stopping, field coil L2 goes up magnetic field and and then disappears engine speed then, and generator just really quits work.

DCF is the solenoid valve of a control oil pump oil cut-off valve rocking arm YB among Fig. 1, J2 be one be used for control electromagnetic valve DCF and the band normally opened contact relay, J1 be one be used for control relay J2 and the band normally-closed contact relay, wherein directly be connected on the two ends of storage battery E behind the normally opened contact of solenoid valve DCF and the relay J 2 series connection safety fuse cutout RD, the coil of relay J 2 is connected in series mutually with the normally-closed contact of relay J 1, the voltage output end N contact of their a termination generator, the other end ground connection, the coil one end ground connection of relay J 1, the other end one tunnel links to each other through switch K and storage battery E positive pole, another road is connected in above-mentioned N contact through isolating diode D12.

The concrete working state of entire circuit is as follows:

Working state 1: switch K disconnects, motor is in flameout state, and generator does not generate electricity, and the output of N end no-voltage does not have electric current to pass through on the coil of relay J 2, and its contact often remains opens, and solenoid valve DCF does not work, and oil circuit is in the fuel feeding state;

Working state 2: the closed conducting of switch K1, motor are in operating condition, relay J 1 coil by K switch from storage battery E, its normally-closed contact of adhesive makes it be in off state, thereby the coil power supply loop of block system relay J2, so the contact of relay J 2 still often remains and opens, solenoid valve DCF does not work, and oil circuit still is in the fuel feeding state;

Working state 3: when motor need stop working; cut off switch K; relay J 1 loses the voltage that storage battery E provides; simultaneously because the existence of isolating diode D12; the voltage of generator output end N can not affact on the relay J 1 by tutorial light LM; so coil losing electricity of relay J 1; its normally-closed contact closure; and because generator self self-keeping circuit's effect makes generator can continue generating; relay J 2 obtains voltage from the N end; its coil must conduct by the normally-closed contact of relay J 1; inhale moving its normally opened contact closure; connect the power supply of solenoid valve DCF; so solenoid valve DCF gets electric work; drive oil pump oil cut-off valve rocking arm YB and cut off oil circuit; engine speed is slack-off gradually then; generator descends gradually at the output voltage of N end; when engine speed is reduced to minimum idling speed point; the N terminal voltage still is higher than the minimum pick-up voltage of relay J 2, and solenoid valve DCF continues to keep attracting state, at last when the N of generator output end voltage is lower than the pick-up voltage of relay J 2; solenoid valve DCF dead electricity resets; oil circuit is unimpeded once more; but this moment, engine speed was close to zero, can not start voluntarily again, thereby flame-out fully.

In sum; want engine misses; only need the series loop of block system relay J1 and switch K to get final product; if temperature detect switch (TDS) so in this series loop, connect again (as the reflection engine coolant temperature) or pressure switch (as reflection engine lubrication oil pressure) the auto extinguishing protection in the time of can being implemented in engine temperature or pressure anomaly, the autocontrol switch of certainly also visual specific requirement series connection other types.

Claims

1. electromagnetic valve oil cut-off control mechanism for diesel engine; comprise storage battery E; safety fuse cutout RD; switch K and by generator windings L1; commutation diode D1～D11; voltage regulator TJ; field coil L2 constitutes band self-keeping circuit's generator; it is characterized in that also including the solenoid valve DCF of a control oil pump oil cut-off valve rocking arm YB; one relay J 1 that is used for control electromagnetic valve DCF and the band relay J 2 of normally opened contact and a control relay J2 and band normally-closed contact; wherein directly be connected on the two ends of storage battery E behind the normally opened contact of solenoid valve DCF and the relay J 2 series connection safety fuse cutout RD; the coil of relay J 2 is connected in series mutually with the normally-closed contact of relay J 1; the voltage output end N contact of one termination generator; the other end ground connection; the coil one end ground connection of relay J 1, the other end one tunnel links to each other through switch K and storage battery E positive pole; another road is connected in above-mentioned N contact through isolating diode D12.

2. electromagnetic valve oil cut-off control mechanism for diesel engine as claimed in claim 1 is characterized in that also being in series with autocontrol switch in the series loop of the coil of described relay J 1 and switch K.

3. electromagnetic valve oil cut-off control mechanism for diesel engine as claimed in claim 2 is characterized in that the temperature detect switch (TDS) of described autocontrol switch for the reflection engine coolant temperature.

4. electromagnetic valve oil cut-off control mechanism for diesel engine as claimed in claim 1 is characterized in that the pressure switch of described autocontrol switch for reflection engine lubrication oil pressure.