CN2141841Y - Automatic controlled forced idling fuel-saving device for gasoline vehicle - Google Patents

Abstract

The utility model relates to an automatic control forced idling oil-saving device for a gasoline vehicle. The automatic control forced idling oil-saving device for a gasoline vehicle is composed of an electronic control unit, a rotary speed signal sensor, an air throttle full closed signal sensor, and a normal closed oil cutting electromagnetic valve. The valve needle of the normal closed oil cutting electromagnetic valve is automatically controlled by the electronic control unit. When an engine is in a forced idling working condition, the valve needle automatically cuts the passage of the oil passage of the main metering hole of a carburetor. When the engine is in a non-forced idling working condition, the valve needle automatically opens the passage of the oil passage of the main metering hole of the carburetor, and the forced idling and the automatic oil saving of a gasoline vehicle are realized. The automatic control forced idling oil-saving device for a gasoline vehicle has obvious oil saving effect and safe work.

Description

Automatic controlled forced idling fuel-saving device for gasoline vehicle

The utility model relates to petrol engine carburetor idling device technique field, specifically the valve of the composite control asphalt channel by electric device and mechanical device.

Gasoline car forced idling gasoline-saving device is a kind of idling oil circuit that turn-offs Carburetor when petrol engine is in forced idling mode, makes fuel can't enter the gasoline-saving device of suction tude and cylinder.Many car enforce idle speed fuel saved devices are arranged at present both at home and abroad, the degree of vacuum of the employing suction tude that has is as the judgement signal of forced idling mode, the valve of the composite control transit system by electric device and mechanical device, this method is to different Carburetors, different petrolic working condition bad adaptability; The employing manual control switch who has cuts off asphalt channel, and this method has increased driver's burden, and fuel-saving efficiency is not high; There is complex structure in some forced idling gasoline-saving device also, installs and uses inconvenience, the more high shortcoming of cost.

The purpose of this utility model is to overcome the shortcoming of above-mentioned several gasoline car forced idling devices, and a kind of valve of automatic control oil channel passage is provided, the gasoline car forced idling gasoline-saving device that oil-saving effect is obvious, safe and reliable.

For achieving the above object, the solution that the utility model adopts is: a normally closed Fuel Cut Solenoid Valve is set on the main jet carrier of gasoline vehicle engine Carburetor, adjust the screw place in the minimum aperture of closure a closure full cut-off signal emitter is set, to the low voltage line of circuit breaker, a rotary speed signal sensor is set at spark coil, in order to realize that normally closed Fuel Cut Solenoid Valve cuts off the asphalt channel of carbureter main jet when the gasoline car forced idling automatically, when optional idling, open the asphalt channel of carbureter main jet automatically, also be provided with an electronic control unit.Normally closed Fuel Cut Solenoid Valve of the present utility model is made of body, blanking cover, main jet body, main jet, needle, valve guide sleeve, return spring.

Needle guide sleeve of the present utility model is to be made by non-magnet_conductible materials such as copper, aluminium.

The utility model is compared with existing gasoline car forced idling gasoline-saving device, has realized gasoline car automatic fuel-economizing when forced idling mode, has advantages such as oil-saving effect is obvious, safe and reliable, remarkable in economical benefits.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural drawing of normally closed Fuel Cut Solenoid Valve;

Fig. 3 is the structural drawing of throttle signal sensor;

Fig. 4 is the electronic control unit functional-block diagram.

Below in conjunction with drawings and Examples the utility model is further described.

In structural drawing of the present utility model shown in Figure 1, rotary speed signal sensor 3 and closure full cut-off signal emitter 4 arrive electronic control unit 1 with petrolic tach signal and closure full cut-off signal conveys, electronic control unit 1 judges whether petrol engine is in forced idling mode, control is installed in normally closed Fuel Cut Solenoid Valve 2 cut-outs on Carburetor 5 main jet carriers or opens the main jet asphalt channel then, realizes gasoline car automatic fuel-economizing when forced idling.

In normally closed Fuel Cut Solenoid Valve structural drawing shown in Figure 2, an electromagnetic coil 14, right-hand member are set in the inside of body 12 to be installed nonmetal blanking cover 15, a left end and is connected with main jet body 9, the main jet 6 of pulling down Carburetor 5 links with main jet body 9, sealing gasket 11 of assembling between main jet body 9 and the body 12.Needle guide sleeve 13 made from non-magnet materials such as copper, aluminium of central position suit in electromagnetic coil 14, be used to lead needle 8 side-to-side movements and prevent that gasoline from entering electromagnetic coil 14 of this guide sleeve, valve seat 7, backshank that the syringe needle of needle 8 is put into main jet body 9 insert needle guide sleeve 13, permeability magnetic materials such as needle 8 usefulness iron, steel, iron-nickel alloy are made, and the angle of the axial section intersection of its syringe needle is 60 °.A return spring 10 is set between needle 8 and needle guide sleeve 13, this return spring makes the syringe needle of motor needle 8 under the forced idling working condition fall in the valve seat 7, the asphalt channel of main jet 6 is cut off, reach the fuel-economizing purpose, under optional idling work situation, electromagnetic coil 14 energisings, needle 8 moves right, the asphalt channel of main jet 6 is opened, and motor is in normal working.

In the structural drawing of Fig. 1, closure full cut-off signal emitter shown in Figure 3, after insulating bush is loaded onto nonmetal felt pad 18, be fixed on and adjust on the screw frame 19, make the insulating bush 17 and the body of Carburetor 5 insulate, in the insulating bush 17 of then the minimum aperture adjustment of Carburetor screw 16 being packed into.When the closure full cut-off, adjust screw and contact with Carburetor 5 lower bodies, produce a bonding signal and send into electronic control unit 1.

Closure full cut-off signal emitter 4 also can adopt the endpoint signal electric switch.

Fig. 4 shows the electronic control unit functional-block diagram.In the drawings; tach signal is by obtaining on the low voltage line of rotary speed signal sensor 3 from the spark coil to the circuit breaker; it is to low tension ignition pulse signal that is directly proportional with rotating speed of electronic control unit 1 input; through limiter protection circuit; send into frequency---voltage conversion circuit; become the d. c. voltage signal that is directly proportional with ignition pulse frequency, the magnitude of voltage of sending into the setting of voltage comparator and oil-break speed setting circuit again compares.During the closure full cut-off, closure full cut-off signal emitter 4 output closure full close position signals, the voltage of frequency---voltage conversion circuit output is during greater than oil-break speed setting voltage, the comparator upset, make the actuating of relay by driving amplification circuit, control normally closed Fuel Cut Solenoid Valve 2 shutoff main jet asphalt channels and reach the fuel-economizing purpose.When closure is not full cut-off or engine speed during less than forced idling oil-break rotating speed, comparator does not overturn, normally closed Fuel Cut Solenoid Valve 2 energisings, and the main jet asphalt channel is opened, and motor is in normal working.

Claims (2)

1, a kind of automatic control gasoline car forced idling gasoline-saving device, it comprises:

Electronic control unit [1], rotary speed signal sensor [3], closure full cut-off signal emitter [4] is characterized in that it also comprises:

Be installed in the normally closed Fuel Cut Solenoid Valve [2] on carbureter main jet [6] seat, the inside of the body [12] of this normally closed Fuel Cut Solenoid Valve [2] is provided with that electromagnetic coil [14], right-hand member are equipped with blanking cover [15], left end is equipped with the main jet body [9] that the other end is connected with main jet [6], a needle guide sleeve of central position suit in electromagnetic coil [14] [13], valve seat, backshank that the needle end of needle [8] is put into main jet body [9] insert needle guide sleeve [13], are provided with return spring [10] between needle [8] and needle guide sleeve [13].

2, according to the described automatic control gasoline car forced idling gasoline-saving device of claim 1, it is characterized in that said needle guide sleeve (13) is to be made by non-magnet_conductible material.

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