Electronic Brake Line Lock for Drag Racing Tire Conditioning
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Solution Overview
Problem
In scenarios requiring tire conditioning, such as drag racing, drivers face challenges in maintaining vehicle position while increasing tire surface temperature, as they need to manage clutch, throttle, and brake pedals simultaneously, making it difficult to hold some tires stationary and others rotating.
Innovation Solution
A brake system with a wheel hold mode that applies and maintains pressure independently on non-driven axle wheels, allowing driven wheels to rotate freely, using a master cylinder, wheel brakes, and an electronic control unit to control pressure, with trigger events for release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the driver operates the brake pedal continuously to hold the vehicle in place, then the vehicle position is maintained, but the driver cannot focus on throttle and clutch management simultaneously
Solution Approach 1:
The brake system applies line lock pressure automatically to the non-driven axle wheels without requiring continuous driver input. The system maintains brake pressure independently once activated, allowing the driver to release the brake pedal and focus on throttle and clutch management during tire conditioning operations.
2Reliability
If mechanical and electro-mechanical valves and solenoids are installed to assist brake pressure maintenance, then brake pressure control is improved, but the device complexity increases
Solution Approach 1:
The electronic control unit integrates multiple functions including line lock control, wheel hold mode activation, and automatic pressure maintenance into a single controller. This consolidates what would otherwise require multiple separate mechanical valves and solenoids into one electronic system, reducing overall complexity while maintaining reliable brake pressure control.
3Stability of the object's composition
If brake pressure is applied to all wheels, then the vehicle is held stationary, but the driven wheels cannot rotate freely for tire heating
Solution Approach 1:
The system applies brake pressure selectively only to the non-driven axle wheels while leaving the driven axle wheels free to rotate. This localized application of braking force maintains vehicle stability through the non-driven wheels while allowing the driven wheels to spin and generate heat for tire conditioning.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the driver to focus on throttle and clutch without continuously pressing the brake pedal, maintaining non-driven axle brake pressure to hold the vehicle in place and heat up driven wheels, improving tire conditioning efficiency.
Implementation Method 1
A brake system comprises a master cylinder, a plurality of wheel brakes connected to the master cylinder to apply a brake pressure at each of a plurality of vehicle wheels
Implementation Method 2
an electronic control unit connected to the master cylinder to control pressure within the brake system
Implementation Method 3
a plurality of wheel brakes connected to the master cylinder to apply a brake pressure at each of a plurality of vehicle wheels
Data Source
AI summary
A method applying a line lock feature, i.e. a wheel hold mode, with a brake system for a vehicle comprises initiating a wheel hold mode for the brake system and applying pressure to the wheels of a non-driven axle. The wheel brake pressure is maintained at the wheels of the non-driven axle independent of application of the brake pedal. The wheel brake pressure at the wheels of the non-driven axle is released when a release trigger event occurs. The release trigger event may be an automatic trigger event or a driver actuated trigger event.