Related Knowledge of Generator Wet Stack

What is a generator wet stack?

When it comes to generators, the so-called "wet pile" refers to a mixture of unburned fuel and carbon smoke accumulated in the exhaust pipe; It is usually caused by the engine running for a long time at a power below 60% of its rated output. This does not allow the generator engine to reach the necessary temperature range of 1500 to 1800 degrees to operate at optimal temperatures. As is well known, long-term low-load operation can cause permanent damage to the engine, and even catastrophic malfunctions.

Wet piles may also be caused by excessive refueling, fuel injector malfunctions, improper air-fuel ratios, or even short periods of generator operation in cold weather.

How to identify whether a generator has a wet pile?

Excessive black smoke that lasts for more than a few seconds is usually a cause for concern. If there is a noticeable accumulation of thick black sludge around the exhaust manifold, exhaust pipe, or even turbocharger of a diesel engine, you should definitely think that the device is a wet pile.

What can you do if the generator has a wet pile?

The general rule of thumb for eliminating the wet pile effect in diesel generators is to operate the unit at approximately 75% of its rated output for three to four hours. However, you must be careful of generators that operate at low loads for a long time. The exhaust temperature under load is much higher than the self ignition temperature of diesel fuel, which can cause smoke and unburned fuel to ignite in the exhaust system, posing a serious fire hazard!

When the history of diesel generator sets is unclear or there are obvious visual signs of wet piles, Dingbo Electric strongly recommends that professional diesel generator maintenance companies manage negative testing.

How to prevent wet stacking?

Choose a diesel generator of the appropriate size because your application is key to preventing wet stacks and many other issues, so let professionals help. Dingbo Electric strongly recommends that you follow all manufacturer testing schedules, procedures, and fuel specifications to fully comply with the provisions in the operating manual. Most professionals recommend that you test your generator engine every 36 months, at least 60% of the rated output power.

Founded in 1974, Dingbo Power Generation Equipment Co., Ltd. is a professional manufacturer of diesel engines, generators and generator sets, and one of the earliest manufacturers of diesel engines, generators and generator sets in China. Since 1992, the company has been a qualified generator set manufacturer inspected by the National Internal Combustion Engine Generator Set Quality Supervision and Inspection Center. Over the years, the company has carried out extensive cooperation with Shanghai Diesel, Weichai, Sweden Volvo, Sino US joint venture Chongqing Cummins, American Qianglu and other companies, and has become a (OEM) supporting factory and technical center. It has 64 sales service departments nationwide, providing users with design, supply, commissioning and maintenance services at any time. Dingbo quality is worth depending on. If you want get more information, please feel free to send email to sales@dieselgeneratortech.com we will pay highly attention on your question.