CN201318219Y

CN201318219Y - Engine protector

Info

Publication number: CN201318219Y
Application number: CNU2008202108449U
Authority: CN
Inventors: 肖礼
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-09
Filing date: 2008-12-09
Publication date: 2009-09-30
Anticipated expiration: 2018-12-09

Abstract

The utility model provides an engine protector, which is characterized in that the engine protector comprises a main controller, an N-pole detection circuit, an engine-oil pressure sensor and an engine-miss controller, wherein the N-pole detection circuit is used for detecting whether an engine works or not. The N-pole detection circuit, the engine-oil pressure sensor and the engine-miss controller are respectively connected with the main controller. The engine protector also comprises a level sensor connected with the main controller, and a water-temperature sensor connected with the main controller. The main controller is provided with a delay unit. The engine protector can prevent faults such as burn-out and bearing score of the engine from happening and effectively protect the engine.

Description

Engine protector

Technical field

The utility model belongs to electronic technology field, relates to a kind of engine protector.

Background technique

Motor is as the nucleus module of mechanical device (means of transportation or other machinery that have motor as automobile, train, steamer etc.), often because water temperature is too high, water level is low excessively or the machine oil fault causes engine scuffing, tile kilning, has a strong impact on the usability and the life-span of motor.

The model utility content

Technical problem to be solved in the utility model provides a kind of engine protector, can effectively prevent the scuffing of cylinder bore or the tile kilning of motor.

For solving the problems of the technologies described above, the technological scheme that the utility model adopted is:

A kind of engine protector is characterized in that, comprises master controller, is used to detect generator whether work N utmost point testing circuit, oil pressure sensor and the engine misses controller of (promptly whether starting); Described N utmost point testing circuit, oil pressure sensor and engine misses controller all are connected with described master controller.

This engine protector also comprises level sensor, and described level sensor is connected with described master controller.

This engine protector also comprises cooling-water temperature sensor, and described cooling-water temperature sensor is connected with described master controller.

Described master controller has a delay unit.1～50s as the case may be can delay time.

Described master controller is a microprocessor.

Described microprocessor be programmable logic controller (PLC) (PLA), single-chip microcomputer, DSP, arm processor or FPGA the CPLD chip.

Protector also has display device and the fault alarm that is used to show normal information and fault message.

The beneficial effect that the utlity model has has:

1: full-automatic protection has the function of omnidistance discretionary protection preventing engine scuffing of cylinder bore and tile kilning

2: the motor water level is crossed when hanging down, and shows trouble light. report to the police. and protect motor to quit work automatically.

3: engine motor oil hypotony and when there be not engine oil pressure shows trouble light. report to the police. and protect motor to quit work automatically.

4: too high when engine water temperature, show trouble light. report to the police. protect the motor function that quits work automatically

5: have anhydrous the startup, start the back out-of-work function of protection motor automatically, can normally start work again after adding water.

6: protector has warning and shows the Presentation Function of guilty culprit.

7: protector employing error is low, precision is high, amplifying power is big and the relay of good stability is made control power supply device.

8: protector has the out of order demonstration of generator. warning function.

9: keeping device have need not the people the automatic control function of control.

Description of drawings

Fig. 1 is a theory diagram of the present utility model;

Fig. 2 is an an embodiment's of the present utility model circuit block diagram.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Embodiment 1:

As shown in Figure 1, a kind of engine protector comprises master controller, is used for detection of engine whether work N utmost point testing circuit, oil pressure sensor and the engine misses controller of (startup); Described N utmost point testing circuit, oil pressure sensor and engine misses controller all are connected with described master controller.Also comprise level sensor, described level sensor is connected with described master controller.Also comprise cooling-water temperature sensor, described cooling-water temperature sensor is connected with described master controller.Described master controller has a delay unit.Described master controller is a microprocessor.Described microprocessor is programmable logic controller (PLC) (PLA).Protector also has display device and the fault alarm that is used to show normal information and fault message.

The effect of delay unit is; in engine cold-start, because this moment, machine oil may not come up in a short period of time, if this delay unit not; protector can make that motor can't cold start-up because detection causes motor to quit work less than engine oil pressure.Therefore need delay unit, about time-delay 20s, and make engine motor oil to have ample time up, restart protector, make engine cold-start smooth.The benchmark of time-delay is that N utmost point testing circuit detects motor and starts.Be engine start, restarted time-delay.

Embodiment 2:

The working principle of protector. when the electric switch key opened to the ON shelves, the power on circuitry of car load was also powered to engine protector.At this moment the work of protector energising control final controlling element; at this moment motor can start; but at this moment have only the display system of water temperature protector and water level to work; reason has adopted wherein generator N utmost point control recognition circuit (is whether detection of engine starts; engine start one starts, and this circuit just can detect electrical signal).

1:N utmost point control: comprise that the N utmost point detects the control with N; when engine operation; motor drives generator work generator and sends; and it is neutral by the output of the N utmost point; the control of the N utmost point is controlled protector work with the electrical signal of the N utmost point of generator, and the N utmost point is just controlled protector work when engine operation, when motor stops; the N utmost point just can not be exported electrical signal, and then protector quits work.

The fault extremely relevant with N shows and reports to the police; CPU detects the working condition of the generator N utmost point always; when motor when system detected the generator N utmost point and did not export electrical signal when work; this protector can show its fault and and provide alarm; but can not control engine misses, handle the indication of reporting to the police after the fault well and remove yet.The effect that the N machine is reported to the police is, there is fault in prompting generator this moment, promptly can't continue as storage battery and consumer provides electric energy, reminds the user to fix a breakdown as early as possible.Because, the startup of motor and the electric energy of all consumers on the car are supplied with by generator, the charging of storage battery also comes from generator, consumer when generator is not worked on the car can all consume the electric energy of storage battery, thereby can cause that motor can't start the inconvenience that can't drive a vehicle with night.

2: water temperature detects and control: water temperature detects and is controlled in the protector from main control, is exactly not controlled by the N utmost point, and whole process is autonomous.

Its principle from main control is such, will not cause that water temperature increases as everyone knows when the generator of motor is not worked, and its reason is that motor, generator and water pump generally are to be connected with belt with same.When the belt of generator has broken or bad; will cause water temperature to increase and cause the machine temperature of motor to increase and cause the generation of engine scuffing fault; if and water temperature control protector is controlled without the N utmost point; to influence exactly and develop engine trouble when water temperature has been increased to dangerous water temperature; the water temperature system has just played this protective action, and such installation can not influence the control that influences the water temperature protection when generator is working properly yet.

3: water level control: water level system is semi-automatic-controlled in protector; can indicate the situation of its water level when opening electric switch key water level system; promptly have or not the cooling liquid indication; motor can not start when having cooling liquid in the motor when cold machine; but quitting work behind the controller control engine start under the control action of the N utmost point at once; its reason is mainly protected motor; purpose is when not having in the motor or lack cooling liquid; protector can indicate situation; but can not control protector control motor cannot start; the control of reason water level is controlled by the N utmost point; the N utmost point was not exported control signal when motor did not start; water level control does not shield; just started and start back N utmost point control to start water level control simultaneously; just control engine misses, the reason of control does not have at motor as everyone knows that motor is bound to burn out (scuffing of cylinder bore) under the situation of cooling liquid.Its control has the one side of its hommization; the car that does not add antifreeze liquid in the winter time and discharge water is generally when cold start-up; under this protector, can start; promptly can realize the anhydrous startup of motor; but cannot keep work for a long time under this state, the effect of protection motor is played in the work of shutting engine down automatically.Purpose is that prompting no cooling liquid or cooling liquid is very few behind engine start, makes the driver can find the reason (be because of do not have cooling liquid or cooling liquid very few) of engine misses as early as possible.Can not allow driver's worry because of there not being water that motor can not be started yet.

4. machine oil is protected control section

Machine oil protection control section is detected by oil pressure sensor, master controller, the N utmost point and delay circuit is formed.Its working principle: N utmost point testing circuit just detects electrical signal when motor just starts; then master controller (CPU) then starts time-delay (time-delay 20s) and a machines oil pressure and indicate the situation of its engine oil pressure but do not shield at this 20S inner engine oil protector in the 20S again; master controller (CPU) starts the pressure (passing through oil pressure sensor) that protective action detects machine oil behind the 20S but crossed; if hypotony or do not have; then report to the police and show, and the control engine misses.The cause that when cold start-up is owing to engine motor oil; when not working, motor the oil leak in the oil pump is vacated existing hollow through placing; or the pump of oil pump oil decrease in efficiency causes the speed of oil pump pump machine oil when cold machine has just started slowly motor can't to be started; so in the control circuit of machine oil, adopt machine oil time-delay control to realize the engine cold-start function: switch on to delay capacitor through the IC that master controller (CPU) control back power supply enters delayer and process delayer when power supply behind the cold start engine enters master controller (CPU) by the control of the N utmost point; after electric capacity is full of; electric capacity is with regard to chronic discharge; the delay time work of controller oil guard circuit; this delayer is 20 seconds; promptly when working, engine start do not play a protective role in 20 seconds inner engine oil protective circuits that just start; after time-delay, again power supply is inputed to machine oil control system CPU and play control action; the effect of its delayer is; do not work at firm startup control system machine oil system delay certain hour, do not allow it the flame-out situation in back occur starting.The reason of motor standing time and machine oil viscosity causes that oil pump comes the time of lubricating parts to oil pump to main oil gallery, and might cause that the fault of tile kilning takes place.When motor the following operating time of situation that does not have oil lubricating of a specified duration and cause that the fault that motor burns takes place; in order to prevent the generation of its fault; so delayer has just only used 20 seconds delay time to delay time and wait on the machine oil; but just startup work automatically of machine oil protective circuit after having spent 20 seconds; if this moment, machine oil also was less than main oil gallery; protector is just controlled motor and is quit work; wait for next time and starting; but present motor generally is will arrive main oil gallery to oil pump in tens seconds; also occur slow situation promptly want 20 seconds just can above machine oil; but very unusual fault can not appear yet; promptly when behind the engine start next being exactly preheating (preheating generally is about one to five minute); the cold start-up preheating generally is an idling; not play lubrication less than main oil gallery in 20 seconds also be influence not concerning motor to machine oil when the firm cold start-up of motor; but protector just starts after having spent 20 seconds; if this moment, the motor main oil gallery was not also gone up machine oil; protector will automatically controlled engine quits work and protects motor; if machine oil has arrived main stem; at this moment machine oil protection controller will be checked the engine oil pressure of its machine oil; but if all normal engine proper functioning just; the sensor of its machine oil control protector is a pressure transducer; it is low promptly to work as engine oil pressure; or when not having engine oil pressure; sensor all can be controlled engine misses by outgoing signal via controller (being CPU), protects motor.Machine oil protective circuit detection of engine machine oil situation always after engine start is working properly is till the manual control motor quits work.

Time-delay, smooth in order to make engine cold-start, if there is not the time-delay of machine oil, then motor is when cold start-up, and protector can make controller (CPU) control automatic engine stop because there not being machine oil, thereby makes motor to start smoothly.

Final controlling element: final controlling element comprises the blanket of control gasoline or diesel engine and other engine misses, and promptly the engine misses controller is controlled by the output signal of CPU.3 CPU among Fig. 2 can be integrated into a CPU.

Claims

1. an engine protector is characterized in that, comprises master controller, is used to detect N utmost point testing circuit, oil pressure sensor and the engine misses controller whether generator works; Described N utmost point testing circuit, oil pressure sensor and engine misses controller all are connected with described master controller.

2. engine protector according to claim 1 is characterized in that, also comprises level sensor, and described level sensor is connected with described master controller.

3. engine protector according to claim 1 and 2 is characterized in that, also comprises cooling-water temperature sensor, and described cooling-water temperature sensor is connected with described master controller.

4. engine protector according to claim 3 is characterized in that described master controller has a delay unit.

5. according to claim 1 or 4 described engine protectors, it is characterized in that described master controller is a microprocessor.

6. engine protector according to claim 5 is characterized in that, described microprocessor be programmable logic controller (PLC), single-chip microcomputer, DSP, arm processor or FPGA the CPLD chip.