Diesel engine inventor Rudolf Diesel’s disappearance and death was ruled a suicide, but theories point to foul play ...

The diesel engine was a revelation when it first entered the market in the early 1900s, and has since had a number of variations that led to improvements.

Rudolph Diesel made tremendous progress in improving fuel efficiency by developing his diesel engine in the 1890s. Gasoline engines had been in development and commercial use for some years but were ...