The principle of the oil pump, what is the principle of the oil pump?

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Calculation of fuel consumption.

Before purchasing a diesel generator set, in order to understand the fuel consumption of its use, and most diesel generator set customers do not know the size of the fuel consumption of the diesel generator set and how to calculate the fuel consumption of the diesel generator set, they will first consult the fuel consumption of the generator set; In fact, it is difficult to have a unified statement. Generally speaking, the fuel consumption of diesel generators is related to the following two factors:

1. Fuel consumption rate, different brands of diesel generator sets, their fuel consumption rate is different, the oil consumption is different;

Second, the size of the electric load, the load is large, the throttle is large, the fuel consumption is larger, on the contrary, the load is smaller, the relative fuel consumption is smaller.

30kw diesel generator set fuel consumption = kg (kg) = liter (l).

45kw diesel generator set fuel consumption = kg (kg) = liter (l).

50kw diesel generator set fuel consumption = kg (kg) = liter (l).

75kw diesel generator set fuel consumption = kg (kg) = liter (l).

100kw diesel generator set fuel consumption = 21 kg (kg) = liter (l).

150kw diesel generator set fuel consumption = kg (kg) = liter (l).

200kw diesel generator set fuel consumption = 40 kg (kg) = 50 liters (L).

250kw diesel generator set fuel consumption = kilogram (kg) = liter (l).

300kw diesel generator set fuel consumption = 63 kg (kg) = liter (l).

350kw diesel generator set fuel consumption = kg (kg) = liter (l).

400kw diesel generator set fuel consumption = kilogram (kg) = liter (l).

450kw diesel generator set fuel consumption = kg (kg) = liter (l).

500kw diesel generator set fuel consumption = kg (kg) = liter (l).

The specific calculation of fuel consumption of diesel generators is as follows:

One liter of diesel fuel is approximately equal to kilograms (1l = or so.

Most of the manufacturers of diesel generators use G, which means how many grams (g) of oil is consumed per kilowatt per hour of the generator set, and then the unit is replaced with liters (L) so that you can know the cost of fuel consumption per hour.

The principle of the oil pump:

1. The principle of the fuel pump: the fuel pump is made of the principle of electromagnetic induction, and the fuel is pumped out of the fuel tank by the pump suction effect, and the fuel is sent to the fuel guide rail for fuel reserve after pressure adjustment through the fuel filter, fuel delivery pipeline and oil pressure regulator.

2. The principle of the oil pump: the oil pump uses the mechanical pumping action of the gear or plunger to suck the oil out of the engine oil pan under the transmission of the engine crankshaft or camshaft in the gear, and then sends it to the relative moving friction parts of the engine for lubrication, cleaning, cleaning and heat dissipation after being filtered by the oil filter.

First, the role of the oil pump.

The function of the fuel pump is to ensure that the diesel is circulated in the low-pressure oil circuit.

And ensure that a certain amount and pressure of diesel fuel is delivered to the fuel injection pump through the diesel hose and diesel filter. Oil delivery.

There are many structural forms of pumps, and the common ones are piston type. Skateboard type and rotor type, etc. Small and medium-sized high-speed diesel engines often use piston type and sliding vane type fuel transfer pumps, and rotor type fuel transfer pumps are generally installed on the distribution type fuel injection pumps, and the piston type fuel transfer pumps are widely used at present.

Second, the structure of the piston oil pump.

Freight forwarding. It is the oil transfer pump that relies on the fuel injection pump camshaft.

on the eccentric wheel.

It is driven and integrated with the fuel injection pump. The piston oil transfer pump is mainly composed of hand oil pump, piston assembly, pump body, oil inlet hole, oil inlet valve, oil outlet hole, oil outlet valve and other parts.

The pump body of oil transfer pump is equipped with piston, piston spring is assembled on one side of piston, the outer side of piston spring is piston spring tight seat, push rod, push rod spring and roller type tappet are installed on the inner side of piston, push rod spring makes the roller of tap stick and the eccentric wheel on the camshaft of fuel injection pump keep tight. The pump body is equipped with an oil inlet valve and an oil outlet valve, and the oil inlet and outlet valves are all and are provided with the oil inlet and outlet valve springs in the upper part of the oil valve. The oil inlet valve spring is equipped with a hand oil pump assembly, which is mainly composed of a pump body, a hand oil pump piston, a hand oil pump rod and a button.

Third, the working principle of the piston oil transfer pump.

When the diesel engine is working, the fuel transfer pump uses the rollers installed on its upper part to move relative to the eccentric wheel on the camshaft of the fuel injection pump.

The reciprocating motion of the piston in the pump is generated. This suction action is used to transport the diesel fuel into the main oil channel inside the fuel injection pump. At the same time, the fuel pump can also automatically adjust the amount of diesel fuel supplied to the fuel injection pump according to the size of the diesel engine load.

The fuel pump is generally integrated in the fuel injection pump body, and its function is to ensure that the diesel fuel circulates in the low-pressure oil circuit, and supplies sufficient quantity and a certain pressure of fuel to the fuel injection pump. When the fuel transfer pump rotates, the fuel is sucked up from the fuel tank and enters the fuel injection pump body through the water sedimenter and the fuel filter under the pressure set by the regulating valve.

The fuel transfer pump increases the pressure of the diesel in the fuel tank to overcome the resistance of the diesel through the filter and ensure that enough diesel fuel is continuously delivered to the fuel injection pump.

The diesel fuel generates a certain pressure, overcomes the resistance of the diesel through the oil filter, and ensures the delivery of sufficient diesel.

The cam is driven by an electric motor to rotate. When the cam pushes the plunger upward, the sealing volume formed by the plunger and the cylinder body decreases, and the oil is squeezed out of the sealing volume and discharged to the required place through the check valve.

When the cam rotates to the descending part of the curve, the spring forces the plunger downward, creating a certain vacuum, and the oil in the tank enters the sealing volume under the action of atmospheric pressure. The cam causes the plunger to rise and fall continuously, and the sealing volume periodically decreases and increases, and the pump continuously sucks and discharges oil.

The components are the pump body, permanent magnet motor, shell, safety valve and check valve, etc., and the fuel pump is used to ensure that the diesel can circulate in the low-pressure oil circuit, and can provide the fuel injection pump with a sufficient amount of fuel with sufficient pressure and pressure, and the fuel delivery volume is four times the maximum fuel injection volume of the full load. In fact, the oil pump is a very important part of the generator, and the daily maintenance of the royal car needs to pay attention to the generator set to install the oil pump to confirm the model and specification of the chain, and to be clear about the anti-rust oil, the size of the gasket selected should be just right, otherwise the gasket is too thin or too thick.

There is a rubber sealing device between the piston of the hand oil pump and the hand oil pump body on the oil pump, which cannot be dismantled at will, and once the rubber ring is found to be aged, it needs to be replaced in time.

In addition, pay attention to whether the coarse filter core in the oil pump joint is blocked, and it should be cleaned frequently, and if the filter screen is damaged, it needs to be replaced immediately.

In addition, it is necessary to ensure that the sealing gasket in each place of the generator set oil pump must be complete, and the number of disassembly of the plastic ring should not be too much, and attention should be paid to replacing it regularly.

Millions of car purchase subsidies.

Oil pump refers to the pump used to transport liquid fuel, lubricating oil and hydraulic oil and other media, its working principle is different from the general centrifugal pump, gear pump and screw pump, etc., the following will be a brief analysis of the common piston pump and gear pump working principle.

Piston pumps. Piston pump is a positive displacement pump with plunger as the moving part, and its main working parts are composed of drive shaft, crankshaft, cam, plunger and pump body. When working, the drive shaft seeps into the sail posture through the cam to drive the plunger to do reciprocating motion, and the plunger forms a volume change in the pump body, so as to realize the suction and discharge of liquid.

The specific working process is as follows:

1) Suction process of the piston pump.

When the plunger begins to move backwards, the pressure in the pump chamber decreases due to the volume of the pump body becoming larger, thus forming a negative pressure area, and the liquid in the sucking pipe enters the pump chamber, and at the same time the intake valve is opened, bringing air into the pump chamber and restoring the pressure in the pump chamber to atmospheric pressure.

2) The process of pressing the car socks of the plunger pump.

When the plunger begins to move forward, the liquid is compressed and discharged from the outlet of the pump body due to the smaller volume of the pump body, while the outlet valve is closed, preventing the liquid from flowing back. As the plunger continues to move forward, the pressure of the compression chamber gradually increases, and when the pressure exceeds the resistance of the outlet pipeline, the liquid is pushed to the outlet to complete a pressure feeding process.

The oil pump is a lightweight and compact pump, and there are three major categories: in-line, dispensing, and monolithic. The oil pump must have a power source to operate, and the cam bending shaft at the lower part of it is driven by the engine crankshaft gear.

The oil pump proposes an oil pump with an aluminum-containing material and a movable molded part arranged in the housing, wherein the movable molded part is at least partially made of a sinterable material containing at least one austenitic iron-based alloy, and the molded part made of a sinterable material has a coefficient of thermal expansion of at least 60% of the thermal expansion coefficient of the shell.

The fuel tank communicates with the atmosphere, and there is a sealed stove opening volume, and the sealing volume can change alternately, and there is an oil distribution to lift and stuff. When repairing, you should pay attention to the cause of wear, especially the shaft bearing. After repair, pay attention to prevent leakage of the gear end face.