A recent patent filing by Ford has unveiled the automotive manufacturer’s potential plans to introduce a line lock feature for all-wheel drive vehicles. This innovation builds on Ford’s existing line lock technology, which was first introduced in the 2015 Mustang. In rear-wheel drive vehicles, the line lock feature locks the front brakes, allowing the rear wheels to spin freely while the car remains stationary. This functionality is commonly used in drag racing to perform burnouts and warm up the tires before starting a race. However, it also provides an exciting way to smoke the tires on any occasion.
Implementing a line lock in all-wheel drive vehicles presents a unique challenge since it relies on locking one set of brakes to prevent the wheels from spinning on one axle. However, Ford’s patent application, which was published by the United States Patent and Trademark Office (USPTO) on September 26, 2023, reveals an innovative approach to overcome this difficulty.
Rather than attempting to spin all the wheels simultaneously, Ford proposes the use of a controller to selectively brake certain wheels while allowing others to spin. This alternating process continues until each tire has been appropriately warmed up. Ford suggests that this could be achieved by braking both wheels on one axle or by individually braking specific wheels. Consequently, burnouts can be performed by engaging one axle and then the other, or by spinning the left or right wheel on a particular axle while simultaneously applying brakes to the opposite one.
To further enhance this technology, Ford’s patent application also discusses the possibility of disconnecting the wheels on a particular axle from the drivetrain in mechanical all-wheel drive systems if they are not being spun. This would be particularly useful in vehicles equipped with a power plant, such as an engine, or in electric vehicles powered by an electric machine. In the latter case, electricity would only be directed to the wheels being spun, not to the wheels that are being braked. This additional feature could significantly improve the efficiency and performance of all-wheel drive line lock systems.
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Although it is important to note that patented ideas do not automatically make their way into production vehicles, an all-wheel drive line lock could be a desirable addition to performance electric vehicles (EVs). Ford already offers the Mustang Mach-E GT in its lineup, with the Mach-E Rally set to join soon. Furthermore, Ford has recently teased the potential debut of a high-performance F-150 Lightning concept, possibly paying homage to the iconic gas-powered F-150 Lightning.
If Ford successfully implements the all-wheel drive line lock, it could revolutionize the driving experience for enthusiasts who crave thrilling moments and improved performance in their vehicles. This technology would not only cater to enthusiasts but also solidify Ford’s position as a forward-thinking and innovative automotive manufacturer.
In conclusion, Ford’s patent filing indicates the company’s interest in developing an all-wheel drive line lock, potentially expanding on the existing line lock feature found in the rear-wheel drive Mustang. By selectively braking specific wheels while allowing others to spin, Ford aims to provide a similar burnout experience in all-wheel drive vehicles. This technology, if realized, could have significant implications for performance EVs and the overall driving experience.
