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Installing Diesel Particulate Filters on Diesel Generators

Jun. 20, 2024

Due to stricter environmental emission regulations worldwide, many changes have been made involving diesel generator engines and the resulting exhaust gases. Although the heat generated by diesel is carbon monoxide, as a typical gasoline engine, it produces twenty times more heat than nitric oxide. Diesel exhaust gas is classified as the first group of carcinogens, related to lung cancer and bladder cancer.

emergency generator

Ultra low sulfur diesel fuel and exhaust gas circulation technology have greatly reduced the harmful emissions of stock generator engines. However, as final compliance becomes mandatory, many older machines are unable to meet this requirement. Install diesel particulate filter (generator DPF) to ensure that most components meet the requirements; Remove at least 90% of harmful pollutants from exhaust gas.


How does the DPF generator work?


DPF is typically installed at the location of a standard exhaust muffler, consisting of a box or cylinder that contains a catalytic substrate and a filter matrix made of cordierite, silicon carbide, ceramics, or metal fibers. The exhaust gas is pressed into the filter base, where particles are collected and retained, and the purified exhaust gas is discharged into the environment.




As time goes by, DPF collects more and more soot particles, and it is obvious that it will be blocked. This may lead to back pressure; This situation can cause catastrophic damage to the engine of the generator. Most DPF is achieved through a process called regeneration. Regenerating uses high temperatures (1112 degrees Fahrenheit+) to effectively burn off collected cigarette ash particles. According to the encyclopedia, "This is done passively (by adding catalyst to the engine during normal operation) or actively introducing very high heat into the exhaust system."


Passive regeneration


Most diesel engines used in diesel generators will adopt passive regeneration mode. In many cases, the operating temperature of diesel generator engines will be high enough to maintain a continuous regeneration state. If the operating temperature does not reach a sufficient level, introducing nitrogen oxides as catalysts into the filter material will help achieve the temperature required to burn off the captured soot particles in the substrate. Therefore, checking whether the DPF is blocked should be a routine part of the generator maintenance plan.


Passive regeneration systems are very popular as refurbishment systems. This is because they do not need to be integrated with the engine or external power supply. On the contrary, they only utilize the already heated exhaust gas.


Maintain compliance


Although some regions have taken the lead in implementing strict emission regulations, most regions are tightening their control over diesel engine pollution. For the owners and operators of diesel generator sets, compliance with environmental standards is a must. How not to do so may result in huge fines, mandatory upgrades, and productivity losses. There are many high-quality after-sales diesel particulate filters available, usually customized according to specific brands and models.


Dingbo Power was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. If you want get more information, please feel free to send email to sales@dieselgeneratortech.com we will pay highly attention on your question.

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