Have you ever wondered why some hybrid cars are particularly quiet when driving? The NVH (Noise, Vibration, Harshness) issues of hybrid vehicles have always troubled users, especially the vibrations ...

You may have noticed them on certain planes when looking out the terminal windows — a kind of shark-toothed look on the back of some planes' engines. Commercial airplanes, outside of their livery, are ...

Writing this reminds me of last winter when my friend's car had difficulty starting in -15 degrees Celsius. Eventually, the mechanic discovered that it was due to the EGR system freezing. This issue ...