Wang Yanmin

Title: Wang Yanmin: Inventor of a Free-Piston Engine Starting Method

Introduction

Wang Yanmin is an inventor based in Troy, Michigan, whose patent work includes a method for starting a free-piston internal combustion engine. He is associated with Ford Global Technologies, LLC, and is credited with 1 patent.

Latest Patents

Wang’s patent, “Compression Pulse Starting of a Free Piston Internal Combustion Engine,” describes a way to start an engine by using an actuator to move its pistons and compress air in the cylinders until conditions are suitable for ignition. The actuator may be hydraulic, pneumatic, or electric.

The method builds compression over successive piston cycles. As the pistons move, stored energy and the air spring in the cylinders help increase piston displacement, pressure, and temperature. Once the air reaches the required conditions, fuel is admitted, preferably by injection. Combustion begins in one cylinder, followed by fuel admission and combustion in the second cylinder.

Career Highlights

The patent highlights Wang’s contribution to engine-starting technology, particularly a strategy designed to achieve ignition through cyclic piston motion and compression. The approach coordinates actuator force with the natural frequency of the reciprocating system to build compression efficiently.

Collaborations

Wang’s listed coworkers include Lixin Peng and Jing Ping Liu. His company affiliation is Ford Global Technologies, LLC.

Conclusion

Wang Yanmin’s patent describes a compression-based starting method that uses coordinated actuator and piston motion to bring a free-piston engine to ignition.