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Products
Cummins diesel engine PT fuel pump (input pump) assembly


Detailed Description:

Cummins PT fuel pump physical map and parameter models are for reference only: please contact our sales online customer service for specific price models,

Rixing Power Technology direct sales Cummins KTA19-G2, KTA19-G3, KTA19-G4, KTAA19-G6A, KTA19-G8, NTA855-G1, NTA855-G2, NTA855-G3, NTA855-G2A, NTA855-G4, NT855- GA, KTA38-G2, KTA38-G3, KTA38-G5, KTA50-G1, KTA50-G2, KTA50-G3, KTA50-G9A, KTA50-GS8, MTA11-G3, MTAA11-G3, 6CTA8.3-G2, 6CTAA8. 3G2, 6LTAA8.9G2, 6BTAA5.9G2, 6BTA5.9G2, 6BT5.9G2, 4BTA3.9G2, 4BT3.9G2, 4B3.9G2, VTA28G5, VTA28G6, QSZ13-G2, QSZ13-G3, QSK38-G5, QSL19G5, QSX15G6 QSX15G8, QSK23G3, QST30G3, QST30G4, QSK60G3, QSK60G4, QSK19G3; QSK78 Dongfeng Cummins high-pressure oil pump, Chongqing Cummins PT fuel pump, American Cummins PT fuel pump,

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Difference between Cummins PT fuel pump system and Cummins high pressure fuel pump system

Cummins PT fuel pump:

1. The maximum fuel pressure output by the PT system does not exceed 300PSI (21kg / cm2)

2. All injectors share one fuel supply pipe

3. Even if some air enters the fuel system, it will not "stall" the engine

4.PT oil pump does not need timing adjustment

5. About 80% of the fuel is used to cool the injector and return to the fuel tank. The injector is well cooled.

6.The injection pressure range is as high as 10000PSI-20000PSI (703-1406kg / cm2), which guarantees good atomization and enables the fuel to burn effectively.

7. A small amount of oil leakage at the oil pipe connection has no effect on the entire engine output

8. Oil quantity is controlled by oil pump and nozzle

9. Engine power can be kept stable without generating power loss

10. Stopping the engine cuts off the flow of fuel

11. Good versatility, the same basic pump and injector can be used to make changes in the power and speed of different models of engines over a wide range.

Cummins high pressure fuel system

1.High pressure oil pump output oil pressure up to 2500--3000PSI (176--225kg / cm2)

2. Each fuel injector needs to lead the fuel supply pipe separately from the fuel pump

3. The engine "stalls" immediately when air enters the fuel system

4. High pressure oil pump needs timing adjustment

5. There is only a small amount of oil return, and the injector cannot be cooled well.

6. Spray pressure range: 2500--3000PSI (176-- 225 kg / cm2)

7. If the oil leakage at the high pressure oil pipe connection of a cylinder will stop the cylinder, the engine power will be reduced.

8. Oil quantity is controlled by oil pump

9. Needs frequent adjustments to maintain optimal performance

10. The engine is stopped when the oil pump is in an inoperative position

11.Engines with different power and speed ranges need to design a separate oil pump

Cummins PT fuel pump includes: gear pump, magnetic filter, pulse diaphragm shock absorber, two-pole governor, throttle shaft, solenoid valve, etc.

Many engines have special requirements for PT oil pumps, such as: adding VS (full range) governor, AFC smoke limiter, EFC electronic governor, ASA air signal attenuator and other devices.

PT (G)-VS-(AFC) is suitable for: bulldozers, ship machines, car cranes, etc.

PT (G)-AFC is suitable for: highway cars, etc.

PT (G)-EFC is suitable for: generator sets, etc.

Cummins diesel engine governor (two-pole governor for standard vehicles)

Cummins PT fuel pump has two functions: speed control and oil pressure control, which affect each other.

(1) Speed control, we are interested in the following four speeds:

A) Low idle speed: 575--650 RPM

B) Maximum torque speed: 1500--1600 RPM

C) Rated speed: 2100 RPM

D) High idle speed (no load): 2300 RPM

Note: 1) The above speeds vary according to engine specifications and models

2) The maximum torque speed is about 70% of the rated speed

3) High idle speed is often greater than 8-10% of rated speed

Cummins engine speed depends on the following three factors;

A) Throttle axis position (throttle axis is commonly called throttle)

B) Governor position

C) Engine load

Cummins PT (G) fuel pump can be equipped with various governors according to different purposes, such as:

Cummins highway-mounted bipolar governor PT (G) —— AFC

Cummins engineering machinery, marine equipment installed full speed governor PT (G) —— VS —— (AFC)

Cummins generator assembled electronic governor PT (G) —— EFC

Cummins Crane PT (G) —— VS

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