When towing heavy loads, having a reliable braking system is crucial. One of the most advanced systems available today is the trailer electric over hydraulic brakes. This system combines the precision of electric control with the power of hydraulic braking, offering superior performance and safety. In this guide, we’ll explore how electric over hydraulic brakes work, their advantages, and what to consider when choosing this system for your trailer.
What Are Electric Over Hydraulic Brakes?
Electric over hydraulic (EOH) brakes are a hybrid system that uses an electric signal from the brake controller in the towing vehicle to activate a hydraulic actuator on the trailer. This actuator then pressurizes the hydraulic brake lines, engaging the brakes on the trailer’s wheels. This combination provides the precise control of electric brakes with the powerful stopping force of hydraulic brakes.
How Do Trailer Electric Over Hydraulic Brakes Work?
The operation of EOH brakes involves several key components:
- Brake Controller:
- Installed in the towing vehicle, the brake controller sends an electric signal when the driver applies the brakes. This signal is proportional to the pressure applied to the vehicle’s brakes.
- Hydraulic Actuator:
- The electric signal activates a hydraulic actuator mounted on the trailer. This actuator pressurizes the hydraulic fluid, which is then sent to the brake calipers or drums on the trailer wheels.
- Brake Assemblies:
- The pressurized hydraulic fluid forces the brake pads or shoes against the rotors or drums, creating friction and slowing down the trailer. The strength of this braking force is controlled by the brake controller.
Benefits of Electric Over Hydraulic Brakes
Choosing an electric over hydraulic brake system offers several advantages:
- Superior Braking Power:
- EOH systems provide stronger and more consistent braking power, making them ideal for heavy trailers or situations where precise control is essential.
- Smoother Braking:
- The proportional braking control ensures that the trailer’s brakes engage smoothly, reducing the risk of jerky stops and improving overall safety.
- Enhanced Heat Dissipation:
- Hydraulic systems are better at managing heat generated during braking, reducing the risk of brake fade on long descents.
- Increased Durability:
- Hydraulic components are generally more durable than purely electric systems, requiring less frequent maintenance and offering a longer lifespan.
When to Choose Electric Over Hydraulic Brakes
EOH brakes are particularly beneficial in the following scenarios:
- Heavy Loads: For trailers carrying heavy loads, EOH brakes provide the necessary stopping power and reliability.
- Frequent Towing: If you tow frequently, especially over long distances or in hilly terrain, the enhanced performance and durability of EOH brakes make them a wise choice.
- Off-Road Use: EOH brakes are better suited for off-road use, where exposure to water, dirt, and debris is common.
Installation and Maintenance Tips
Installing and maintaining electric over hydraulic brakes requires attention to detail:
- Professional Installation:
- Consider having the system professionally installed to ensure all components are correctly set up and that the hydraulic lines are free of air bubbles.
- Regular Inspections:
- Regularly inspect the hydraulic lines, actuator, and brake assemblies for signs of wear or damage.
- Fluid Levels:
- Check the hydraulic fluid levels regularly and top up as needed. Use the recommended brake fluid to prevent contamination.
- System Testing:
- Periodically test the system to ensure the brakes are responding correctly to the brake controller’s input.
Conclusion
Trailer electric over hydraulic brakes offer unmatched braking power and control, making them an excellent choice for those who tow heavy or valuable loads. By understanding how these systems work and following proper installation and maintenance practices, you can ensure a safe and smooth towing experience. Whether you’re hauling a large trailer or navigating challenging terrain, EOH brakes provide the reliability and performance you need.