CN201273223Y

CN201273223Y - Electronic control apparatus for fuel of internal combustion engine

Info

Publication number: CN201273223Y
Application number: CNU2008201881711U
Authority: CN
Inventors: 王浩国
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-23
Filing date: 2008-09-23
Publication date: 2009-07-15
Anticipated expiration: 2018-09-23

Abstract

The utility model belongs to the technical field of control, in particular to a diesel fuel electronic control device, which comprises a fuel injection pump [1], an electric control fuel injector [11] and a pressure regulator [4], and is characterized by further comprising an executor [5], a sensor [4], a signal rotor [2] and an electronic controller [12]. The diesel fuel electronic control device is arranged on a camshaft of a diesel high-pressure fuel pump or the signal rotor [2] on the diesel camshaft, controls the sensor to output varied electric signals which are then converted into instruction current pulses through the electronic controller [12], controls the parameters of the electric control fuel injector on a high-pressure fuel pipeline, such as fuel injection starting time and fuel injection duration and the like, and keeps a diesel under the optimal operation state. The diesel fuel electronic control device has the advantages of simple structure, easy production, low cost, low fault rate and excellent versatility.

Description

A kind of motor fuel electric control device

Technical field

The utility model belongs to the control technique field, particularly a kind of electric control device that is applicable to motor fuel.

Background technique

At present on the internal-combustion engine of traditional pressuring combustion ignition mode, employed mechanical type fuel control unit, generally form by Injection Pump, oil sprayer, Injection Pump has functions such as fuel feeding, fuel-flow control, speed governing, be difficult for the accurate control of realization, thereby can not satisfy the requirement of low emission, low noise and raising fuel economy internal-combustion engine to fuel oil.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provide a kind of simple in structure, cost is low, and the electronic type fuel control unit that can accurately control fuel of internal combustion engine.

The utility model is realized in the following manner:

A kind of motor fuel electric control device comprises Injection Pump, electric-controlled fuel injector, pressure regulator, it is characterized in that it also comprises final controlling element, sensor, signal rotor, electronic controller; Final controlling element is the controlling device of sensor displacement, and final controlling element is made up of execution body, guide rod, travel(l)ing rest, return spring; Carry out body be installed on the fuel injection pump housing camshaft chest covers or internal combustion (IC) engine airframe on; One end of guide rod is fixed on to be carried out on the body, and travel(l)ing rest and return spring are installed on the guide rod, and travel(l)ing rest can be along the guide rod axial motion.

The effect of sensor is that magnetic force is transformed into electrical signal.Sensor is a magnetic induction type, is made up of permanent magnet, iron core and coil etc.Sensor is installed on the travel(l)ing rest, and under the effect of accelerator pedal pulling force and return spring power, sensor can be along the guide rod to-and-fro motion with travel(l)ing rest.

Signal rotor be control sensor in magnetic flux change output electrical signal parts.Signal rotor is made of rotor body and utmost point iron.The type shape of signal rotor can be cylinder type, double wedge type, spoke type.Rotor body available metal material or nonmetallic material are made.Utmost point iron is the prism made from the irony magnetic material, and the exterior edge face is the polygonal of circular shape, is fixed on the rotor body.Signal rotor is installed on the camshaft of the camshaft of internal combustion (IC) engine oil-jetting pump or internal-combustion engine, also a transmission shaft can be set newly on internal combustion (IC) engine airframe, and signal rotor is installed specially.In every two weeks of rotation of internal-combustion engine, signal rotor rotates a circle.Utmost point iron on the described signal rotor, be that the best fuel spray characteristic parameter of internal-combustion engine under different operating modes made prismatic irony magnet case, by means of the rotation of utmost point iron, the magnetic field in the sensor magnetic circuit is changed, magnetic force is transformed into long and short controlled electrical signal of time.Two limits that utmost point iron is axial, the limit of first proximity detector iron core for electrical signal plays initial line, is used for the best start oil spout of controlling combustion engine under different rotating speeds constantly; Utmost point iron leaves the limit of sensor iron core, for electrical signal stops the limit, is used for the fuel injection termination of controlling combustion engine under different rotating speeds constantly; The signal of utmost point iron plays the different in width between initial line and the signal terminating limit, is exactly the injection duration of internal-combustion engine under different rotating speeds.On the signal rotor utmost point iron quantity is set, be to set according to the cylinder number and the purposes of internal-combustion engine.

The effect of electronic controller is that the electrical signal conversion that sensor is imported is become corresponding current-order pulse.Electronic controller is connected with sensor, electric-controlled fuel injector, pressure regulator respectively by lead, with the electrical signal of sensor input, and the injection process of control electric-controlled fuel injector.

The utility model is a foundation with the signal that sensor produces, and internal-combustion engine has been realized the accurate control of injection pressure, fuel injection quantity, injection timing and injection rate, the aspects such as discharging, noise and Economy of internal-combustion engine are all had greatly improved and improves.

Description of drawings

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

1 is Injection Pump among the figure, and 2 is signal rotor, and 3 is utmost point iron, and 4 is sensor, and 5 is final controlling element, 6 is travel(l)ing rest, and 7 is guide rod, and 8 is return spring, and 9 for carrying out body, and 10 is accelerator pedal, 11 is electric-controlled fuel injector, and 12 is electronic controller, and 13 is rotor body, and 14 is pressure regulator.

Embodiment

Provide most preferred embodiment of the present utility model below in conjunction with accompanying drawing:

Injection Pump 1 is a plunger pump, and plunger is reciprocating, and the high pressure fuel of maximum spout oil mass is provided.Behind the engine starting, to put one's foot down 10, pulling force makes travel(l)ing rest 6 and sensor 4 on the final controlling element 5 along guide rod 7, overcome the elastic force of return spring 8, shift to the direction that utmost point iron 3 width increase, the increase of utmost point iron 3 width, the electrical signal that makes sensor 4 flow to electronic controller 12 shifts to an earlier date constantly, endurance prolongs, electronic controller 12 converts the electrical signal to corresponding current-order pulse, control electric-controlled fuel injector 11 fuel injection beginnings shift to an earlier date constantly, injection duration prolongs, be that utmost point iron 3 width increase, injection time just in advance, fuel injection quantity just increases, and the rotating speed of internal-combustion engine improves.Loosen accelerator pedal 10, under the elastic force effect of return spring 8, travel(l)ing rest 6 and sensor 4 on the final controlling element 5, move to the direction that utmost point iron 3 width reduce along guide rod 7, reducing of utmost point iron 3 width, the electrical signal that makes sensor 4 offer electronic controller 12 is postponed constantly, the endurance shortening, electronic controller 12 control electric-controlled fuel injectors 11 commencement of fuel injection are postponed constantly, injection duration shortens, be that utmost point iron 3 width reduce, injection time is just postponed, fuel injection quantity just reduces, and the rotating speed of internal-combustion engine reduces.

The utility model also can be realized the automatic speed regulation control to internal-combustion engine.When accelerator pedal 10 remained unchanged the position of sensor 4 and signal rotor 2, the fuel injection quantity of electric-controlled fuel injector also remained unchanged, and internal-combustion engine turns round under a certain rotating speed.When the load of internal-combustion engine reduces, rotating speed increases or the increase of loading, when rotating speed reduces, the rotating speed of signal rotor 2 also increases thereupon or reduces, signal rotor 2 rotating speeds increase shortens the time that turns over sensor 4 in 3 each week of utmost point iron, sensor 4 offers electronic controller 12 fuel injection signals to be shortened, the injection duration of electric-controlled fuel injector 11 is shortened, be that circulating fuel injection quantity reduces, internal-combustion engine rotational speed drops to original numerical value.Signal rotor 2 rotating speeds reduce increases the time that turns over utmost point iron 3 in 4 each week of sensor, sensor 4 offers electronic controller 12 fuel injection signals and prolongs, the oil injection duration of electric-controlled fuel injector 11 is prolonged, and promptly circulating fuel injection quantity increases, and internal-combustion engine rotational speed is brought up to original numerical value.The utility model is regulated circulating fuel injection quantity with regard to energy sensitive, automatic load, rotation speed change with internal-combustion engine like this, and the rotating speed maintenance of internal-combustion engine is stablized.

The utility model is equally applicable to the fuel control of ignition internal combustion engine, double fuel formula internal-combustion engine etc., can also control the exhaust gas recirculation of internal-combustion engine simultaneously.

Claims

1, a kind of motor fuel electric control device comprises Injection Pump [1], electric-controlled fuel injector [11], pressure regulator [14], it is characterized in that: further comprising final controlling element [5], sensor [4], signal rotor [2], electronic controller [12]; Final controlling element [5] is made up of execution body [9], guide rod [7], travel(l)ing rest [6], return spring [8], execution body [9] is installed on Injection Pump [1] body or camshaft chest covers, one end of guide rod [7] is fixed on to be carried out on the body [9], travel(l)ing rest [6] and return spring [8] are installed on the guide rod [7], and travel(l)ing rest [6] can be along guide rod [7] axial motion; Sensor [4] is a magnetic induction type, and sensor [4] is installed on the travel(l)ing rest [6]; Signal rotor [2] is made of rotor body [13] and utmost point iron [3], and signal rotor [2] is installed on the camshaft or internal combustion (IC) engine camshaft of internal combustion (IC) engine oil-jetting pump [1]; Electronic controller [12] is connected with sensor [4], electric-controlled fuel injector [11], pressure regulator [14] respectively by lead.

2, a kind of motor fuel electric control device according to claim 1, it is characterized in that: utmost point iron [3] is the prism made from the irony magnetic material, and the exterior edge face is the polygonal of circular shape, is fixed on the rotor body [13].