What is a blow-by engine? What does that mean? - Power of Woodstock (2023)

What is an exhaust engine? What does that mean?

What is a blow-by engine? What does that mean? - Power of Woodstock (1)

Engine explosion can affect all diesel engines, including those in your commercial generators. Knowing the signs and symptoms of leaks can help you avoid this problem in the future.

What is Blow-By on a Diesel Engine?

Engine exhaust occurs when a mixture of air and fuel or combustion gases leak between the engine's pistons and the cylinder wall into the crankcase. Engine explosion can occur on bothdiesel and gasoline engines.

You've probably seen or heard an explosion on the highway when passing a car or bus with these license plates. The same problems that occur with these cars or buses can occur with the generator engine.

How Much Blow-By Is Normal?

All engines have lower levels of exhaust because the piston rings are not fully tightened, even on newer engines. For example, a 12-liter engine in good condition can suffer1.5 cubic feet per minute (cfm) of blow-byunder normal operating temperatures. This number increases to 3.5 cfm in cooler temperatures.

Excessive discharge is a sign of larger problems that you will need to address before resuming operations.

Browse Used Generators

What are some of the causes of leaks?

A leak occurs when internal combustion occurring in your engine's combustion chamber forces contaminants such as air, fuel, and moisture through the piston rings and into the crankcase. If your engine's piston rings are not tight or tightly sealed, they will not be able to contain the pressure produced by combustion and will instead leak fuel-air mixture and contaminants.

Over time, as the engine's pistons move up and down against the cylinders during normal engine operation, both parts wear. The cylinders get wider, while the pistons get smaller. Piston rings also wear, making them less capable of maintaining a tight seal. As all the parts continue to rub against each other, these problems become more exaggerated and the number of leaks can increase.

Also, soot and deposits left over from incomplete combustion will accumulate on the rings, interfere with their sealing, and can further burn the engine.

The leak can also be caused by:

  • Defective, broken or ill-fitting piston rings
  • Damaged or defective piston
  • Gaps or gaps between piston rings

All of these issues create a space where air and engine fluids can get into the crankcase and reduce engine compression.

How to check for leaks

Your generator engine can give several signs of explosion that you need to be aware of. Some engine blowout symptoms include:

  • Noises:Loud or sputtering noises coming from the engine, possibly accompanied by clouds of exhaust or exhaled smoke, are signs of an explosion.
  • White smoke:One of the most obvious signs of overshoot is white smoke coming from the oil fill tube or valve cover.
  • oil film:Another telltale sign is a layer of oil film around the tube, as blowing causes unburned fuel to contaminate the oil and seep into the crankcase.
  • Increased oil and fuel consumption:If you notice that your generator is using more oil or fuel than normal, that could be a sign that too much is seeping into the crankcase and causing it to explode.
  • Soot Buildup:Blowing contributes to increasing incomplete combustion, which produces soot that istrapped inside the cylinder walls.
  • Idling or misfiring:If your generator is difficult to start or keep running, exhaust could be to blame, as exhaust affects important engine processes.

What is a blow-by engine? What does that mean? - Power of Woodstock (2)

How does Blow-By affect engines?

Air exhaust inhibits overall engine performance due to loss of compression. Diesel engines run on compression ignition. They convert fuel into energy bypressurizing the cylinder, which generates heat and ignites the diesel fuel.

When the cylinder is leaking, it can't hold as much pressure, leading to misfiring and poor engine performance. Also, when the gases expand and slip past the piston rings, they cannot effectively push the piston down for the engine to produce enough power during the power stroke, resulting in a power drop.

The exhaust also covers parts of the intake with oil and fuel. After piston rings and cylinder walls wear and deteriorate, more air, fuel, and moisture can enter the crankcase and damage parts.

Engines subjected to exhaust gases will also produce a much louder noise than normal and will forcepolluting exhaust smokeout of the engine openings.

Exhausts will also result in increased fuel consumption. If components like air, fuel, and moisture get into the crankcase, they can contaminate and dilute the oil. If residual gases, unburned fuel, moisture, sulfur dioxide, or soot particles remain in the engine's compression chamber, these contaminants can enter the crankcase. From there, they can penetrate the engine and cause extensive damage.

Simply put, engine failure can decrease overall engine efficiency and performance, lead to costly and time-consuming repairs, or cause irreparable damage.

How to Prevent Blow-By

Whether you've discovered a leak in your diesel generator engine or are looking to prevent this problem, leak-free engines are crucial to the continued success of your business. Preventing a leak is perhaps easier than repairing the problems it causes, and can save you time and money in the long run.

Some of the best ways to prevent leaks include:

preventative maintenance

Proper engine maintenance is critical to reducing the chances of engine burnout. Changing your engine oil frequently will help remove any solid carbon buildup, which is known to corrode metals. Adding treatments and detergents to the fuel and oil will help the solids dissolve and settle in liquid form, making them easier to remove.

high quality fluids

Using high quality oils and fuels will also keep your engine running longer and ensure proper combustion. Proper engine fluids will prevent the creation of solid by-products, such as hydrocarbon combustion solids, that wear away metal.

In addition, you should regularly collect and send oil samples to a professional to check the oil for foreign particles and debris. Oil analysis can help inform you of any degradation occurring in the engine.

How to fix the exhaust

If your engine is showing burnout symptoms, major overhauls may be required. Prioritize work on the affected engine, as blowout problems can increase as they last. A good first step would be to clean or replace the piston rings, then clean or polish the cylinder walls of the engine block. Alternatively, you may want to replace the engine or generator set entirely.

If you think your generator motor may be defective, or if you're looking for a new, used, replacement, or rental generator, contact us at Woodstock Power Company!

The Woodstock Power Company Experience

Woodstock Power Company's industry experts focus on commercial generator sets, with in-depth knowledge to help you choose the right commercial or industrial generator for your needs.

Our experts are ready to help you, from answering your generator set questions to helping you find the best selection from our inventory based on:

  • Peak and average power requirements
  • Fuel preference for natural gas or diesel
  • Portability and stationary power
  • Main and standby generator requirements
  • Exhaust restrictions and available space

Our experts can also advise you on prime, continuous and standby power generators and teach you how to find the best used, new or surplus generator for your application.

We only stock the highest rated power generator sets, bringing you generators that fit your budget and offer great value.

Our generators have been thoroughly inspected, serviced and overhauled to ensure you are buying a quality machine you can trust. We make any necessary repairs or modifications to our used generators to bring them up to industry standards and we thoroughly test each generator before we sell it.

With our wide selection of generator sets, we're sure you'll find the model that best suits your operational needs.

We also buy used generators in good condition, so if you've already upgraded and want to sell your older model,contact our sales team!

Please feel free to contact us if you have any questions, concerns, or inquiries to learn more about the Woodstock Power Company experience and the quality of products and services we provide.

Call us today at 610-658-3242 or email us atsales@woodstockpower.com🇧🇷 Also, you can always visit our website and fill out ourContact Form!

follow-us notLinkedIn,YouTube,FacebookmiGorefor more information on commercial generators!

Top Articles
Latest Posts
Article information

Author: Kieth Sipes

Last Updated: 02/02/2023

Views: 6328

Rating: 4.7 / 5 (67 voted)

Reviews: 90% of readers found this page helpful

Author information

Name: Kieth Sipes

Birthday: 2001-04-14

Address: Suite 492 62479 Champlin Loop, South Catrice, MS 57271

Phone: +9663362133320

Job: District Sales Analyst

Hobby: Digital arts, Dance, Ghost hunting, Worldbuilding, Kayaking, Table tennis, 3D printing

Introduction: My name is Kieth Sipes, I am a zany, rich, courageous, powerful, faithful, jolly, excited person who loves writing and wants to share my knowledge and understanding with you.