Is it good to drive with the exhaust brake on?
As a seasoned auto service provider, I often encounter questions about various vehicle features and their proper usage. One common query is whether it's advisable to drive with the exhaust brake engaged. Understanding the function of the exhaust brake and its implications on vehicle performance is crucial for any driver, especially those operating heavy-duty vehicles. In this article, we will explore the benefits and potential drawbacks of using the exhaust brake while driving.
What is an Exhaust Brake?
An exhaust brake is a device used primarily in diesel engines to help slow down the vehicle by restricting the flow of exhaust gases. This action creates back pressure in the engine, which in turn slows the vehicle down without relying solely on the traditional braking system. This feature is particularly beneficial for heavy trucks and vehicles that frequently travel downhill.
Benefits of Using the Exhaust Brake
Driving with the exhaust brake engaged can offer several advantages:
- Improved Control: The exhaust brake provides additional control when descending steep grades, reducing the risk of brake fade.
- Extended Brake Life: By using the exhaust brake, you can minimize wear and tear on the traditional braking system, leading to longer-lasting brakes.
- Fuel Efficiency: Engaging the exhaust brake can help improve fuel efficiency by reducing the need for frequent braking, which can lead to better overall performance.
Potential Drawbacks
While there are benefits, there are also some considerations to keep in mind:
- Engine Strain: Continuous use of the exhaust brake can put additional strain on the engine, particularly if used improperly.
- Noise Levels: Exhaust brakes can be quite loud, which may not be suitable for all driving environments, especially residential areas.
- Not for All Vehicles: Not all vehicles are equipped with exhaust brakes, and using one on a vehicle that isn’t designed for it can lead to mechanical issues.
Conclusion
In summary, using the exhaust brake while driving can be beneficial, particularly for heavy-duty vehicles and during specific driving conditions. However, it is essential to understand your vehicle's capabilities and the proper usage of this feature. Always consult your vehicle's manual or a professional mechanic if you are unsure about the best practices for your specific model. At Kevin's Autos, we are here to help with any questions or concerns regarding your vehicle's maintenance and performance.
Frequently Asked Questions
Should you leave your exhaust brake on all the time?
Theoretically it would last longer if exhaust brake not used as it wouldn't cycle as many times or through as much range of motion. In reality, the actuators sometimes fail at lower than expected hours.
Is an exhaust brake bad for transmission?
In the last few years, Grant has seen exhaust brake-equipped trucks go 100,000 miles on the original brake pads! So in summation, yes, exhaust brakes can hurt automatic transmissions if the line pressure remains at stock levels in the transmission.
Can an exhaust brake damage an engine?
If the pressure in the exhaust system, which also bears against the backside of closed exhaust valves in a multi-cylinder engine, exceeds the valve springs' ability to hold the valves on their seats, the exhaust valves would be forced open and the pistons could strike the valves, causing severe engine damage.
Does using exhaust brake use more fuel?
When installed, some designs create an exhaust restriction even when not activated, negatively affecting both performance and fuel economy.
Does exhaust affect transmission?
If you ignore exhaust system damage, it will ultimate affect the engine, transmission and everything else. It's always best to get the issue(s) addressed early on before it gets even worse.
Do Jake Brakes hurt the engine?
There are some myths about Jake Brakes that can cause confusion about how they work and when to use them. A common myth is that Jake Brakes can hurt the engine. In actuality, when used correctly, Jake Brakes do not damage the engine and work well with other vehicle systems.
Why is exhaust braking illegal?
Jake Brakes are illegal in some areas due to the loud noise they create when compressed air is released through the exhaust. This noise disrupts residential neighborhoods, leading many cities and towns to prohibit their use near interstates and residential zones.
What are the benefits of exhaust brakes?
The Benefits of Exhaust Brakes
It provides engine braking to assist with deceleration. It assists in keeping one's speed in control when going down steep grades and helps maintain the overall management of the vehicle and any trailers one might be towing. It reduces brake heat. It reduces brake wear.
Is it bad to drive with your exhaust brake on?
You can use the exhaust brake as often as you want and will cause no damage to the engine although its recommended that you don't allow the engine to go over 2000RPM while using it.
Does an exhaust brake use more fuel?
When installed, some designs create an exhaust restriction even when not activated, negatively affecting both performance and fuel economy.
