Skip to main content

500 KW Cummins Generator Set PT Pump Fuel Outlet Pressure Adjustment

The PT pump fuel injection system of a 500 KW Cummins generator set is superior to the inline pump fuel injection system and the distribution pump fuel injection system in terms of power, economy, and environmental protection.


cummins genset


The PT pump fuel injection system is a specialized fuel injection system for Cummins K series, N series and other models, and there is already an electronically controlled PT fuel injection system. There are three methods for adjusting the fuel outlet pressure of the PT fuel pump of a 500 KW Cummins generator set. Specifically, as follows:


1. Using a diesel generator and a dynamometer to load the diesel engine, first check the speed at the disconnection point of the governor. When the throttle valve is fully open, increase the load to the rated speed of the diesel engine and observe the outlet pressure of the fuel. When the pressure is below or above the limit value, adjust it according to the following methods: unscrew the maximum opening adjustment screw of the throttle valve, remove the shaft of the throttle valve, and add an appropriate thickness of gasket to increase the pressure. Remove the appropriate thickness of gasket from the throttle valve to reduce the pressure. Under no circumstances should the fuel outlet pressure of the PT fuel pump be adjusted beyond the maximum specified value.


2. When the throttle valve is fully open, check the maximum pressure at the fuel outlet in sequence from low speed to high speed through the transmission. If the pressure is lower than the minimum value specified by the machine or higher than the maximum value specified, it should be adjusted according to Method 1.


3. Pressure check method. This method is not as precise as methods 1 and 2, but it is relatively simple. That is, unscrew the oil cut-off solenoid valve and install a pressure gauge, remove the connecting piece on the throttle valve rocker arm (throttle rocker arm), and turn the throttle valve rocker arm clockwise to the end; Start the diesel engine and run it at a speed 250r/min higher than idle speed; Then accelerate rapidly to the maximum speed of the diesel generator and check the instantaneous pressure reading on the pressure gauge. If it does not match the specified value, the adjustment method is as described in Method 1. After checking and adjusting, the pressure gauge should be removed, the oil cut-off solenoid valve should be reinstalled, and the pipeline flowing through the smoke limiter should be blocked.


The supply pressure of the Cummins generator PT fuel pump or the inlet pressure of the fuel injector depends on the opening of the throttle valve in the PT pump and the outlet pressure of the governor. When the opening of the throttle valve is constant, the supply pressure of the fuel pump increases or decreases with the increase or decrease of the outlet pressure of the governor. The oil pressure increases or decreases with the increase or decrease of centrifugal force on the governor flying block, and the magnitude of centrifugal force increases or decreases with the increase or decrease of diesel engine speed. Therefore, when the opening of the throttle valve remains constant, under different diesel engine loads, the combined effect of fuel supply pressure and time keeps the diesel engine speed basically unchanged.


As a professional diesel generator manufacturer, we always insist on using first-class talents to build a first-class enterprise, create first-class products, create first-class services, and strive to build a first-class domestic enterprise. If you would like to get more information welcome to contact us via sales@dieselgeneratortech.com.

标签：

Comments

Post a Comment

Popular posts from this blog

Diesel Generator Power Ratings: Standby vs Prime vs Continuous

Diesel generator sets are commonly used in a variety of sectors due to their dependable performance and high efficiency. They can be used for emergency power supply in the event of a power cut or used in places without connection to a power grid. When selecting a diesel generator for your home or business, you need to consider many factors, such as generator’s ratings. In this article, we’ll explain the three basic rating types - standby, prime, and continuous in diesel generators. ISO-8528-1:2018 defines basic generator set rating categories based on four operational categories: Emergency Standby Power (ESP), Prime Power (PRP), Continuous Power (COP) and Limited-Time Running Prime (LTP). Read on and learn the application of power ratings for engines used in generating sets. Standby Power Rating Standby Power(ESP) is used to supply emergency power when the external power supply is interrupted, such as power outages. Standby power rated generators can supply reliable electricity as t...
Post a Comment
Read more

How to Choose a Household Mini Generator

With the improvement of people's living standards, there are more and more household appliances, such as rice cookers, microwaves, kettles, refrigerators, air - conditioners, washing machines, etc. It can be said that every household has them. But what if there is a power outage? These appliances won't work properly, and our lives will be greatly disrupted. How can we avoid this? We can use household mini - generators to provide convenience in power consumption. So, how to choose a good household mini - generator? Consider the noise level Since it is for household use, when choosing a household mini - generator, we need to check whether the noise will affect the neighbors. Generally, the seller will demonstrate the performance of the generator in advance. A good household generator can reduce noise by about 80%. Choose a generator with a moderate price Due to different brands, there are significant differences in power, and consequently, the price differences of househ...
Post a Comment
Read more

How to Choose Efficient Diesel Generators for the Film and Television Industry?

In the film and television industry, the stability of the electricity supply during filming is crucial. Whether the equipment are the cameras or the lighting equipment on the filming site, or the post-production equipment, they all need stable and reliable power support. Unstable or interrupted power can result in interrupted filming, damage to equipment, and even affecting the progress and quality of the entire project. Therefore, investing in high-efficiency diesel generator sets has become an important measure for the film and television industry to ensure the reliable power supply for shooting. Determine the power requirements Before choosing a diesel generator set for the film and television industry, it’s necessary to figure out the total power needs, including the electricity demand of the shooting location, the total power of the electrical equipment and the time of using electricity. Also consider whether there are special needs for the generators such as low noise level and...
Post a Comment
Read more