? Executive Summary (TL;DR) What is PMSM Stall Control? Under a locked-rotor (stall) condition, a Permanent Magnet Synchronous Motor (PMSM) has zero rotor speed ($n \approx 0$), resulting in zero mechanical output power ($P_{mech} \approx 0$). However, the electrical system remains highly active. Instead of “increasing current to push through,” a robust motor controller must […]
What is the real difference between multi-link and double wishbone suspension? Simply put, double wishbone suspension uses two triangular arms to clamp the wheel, offering excellent side-support and steering control, making it perfect for front wheels. Multi-link suspension uses three to five separate rods to guide the wheel, offering immense setup flexibility and cabin space,
About the Author I am Johnny Liu, the CEO of Dowway Vehicle. We build clean power drivetrains and smart vehicle dynamics. For over twenty years, I have worked on active car suspensions, drive-by-wire steering, and chassis safety. In our shop, we never build a physical part without testing it on a screen first. Simulink helps
Meet the Author Johnny Liu CEO at Dowway Vehicle With 15 years in car manufacturing and supply chain setup, Johnny leads Dowway Vehicle in building systems for next-generation electric vehicles. Published on: June 24, 2026 Reading Time: 8 minutes — For decades, global Tier-1 giants like Bosch, ZF, and Continental decided how cars were built.
Author: Johnny Liu Title: CEO at Dowway Vehicle Date: June 24, 2026 Category: Automotive Electronics / Functional Safety / Embedded Firmware Quick FAQ What is LBIST on the AURIX TC3xx? It is a hardware self-test that checks the microcontroller’s digital logic gates. It uses internal scan chains, runs pseudo-random test patterns, and creates a unique
By Johnny Liu CEO at Dowway Vehicle Published on June 23, 2026 in Shanghai, China Gears in heavy machinery or vehicle transmissions do not work under constant, uniform torque. Instead, they face sudden torque spikes, start-stop cycles, and unpredictable shifts. If you design a gearbox using only static peak-load calculations, you get one of two
Published on: June 22, 2026 Author: Johnny Liu, CEO at Dowway Vehicle Published On: June 23, 2026 Reading Time: 12 minutes Author’s Note “As the CEO of Dowway Vehicle, I have spent years tracking how mechanical limits constrain automotive engineering. What we are seeing in 2026 is a permanent shift in how vehicles move. The
Published on: June 22, 2026 Author: Johnny Liu, CEO at Dowway Vehicle Quick Core Summary 1. Introduction: Coaxial Electric Drivetrains and the NVH Challenge Compact spaces in electric vehicles (EVs) have pushed carmakers to use coaxial electric drives. By lining up the motor shaft, the gears, and the wheel axle along one center line, we
In my last post, we looked at how gears work. You already know that gears use tooth ratios to trade speed for torque. Power stays constant, minus losses. But as someone who builds drivetrains every day, I can tell you that the real difference between a great gearbox and a poor one is not whether
About the Author Johnny Liu is the Chief Executive Officer at Dowway Vehicle. With over twenty years of direct leadership in automotive chassis dynamics, powertrain isolation, and advanced elastomer applications, Johnny bridges the gap between raw polymer chemistry and vehicle refinement for global OEMs. Under his leadership, Dowway Vehicle continues to build next-generation NVH and
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