Who is correct regarding the source of a diesel engine's high torque output?

A diesel engine is known for its high torque output, primarily due to its design and operating principles. Diesel engines operate on a different cycle compared to gasoline engines, which contributes significantly to their torque characteristics.

One key factor is that diesel engines have a higher compression ratio than gasoline engines. This elevated compression ratio allows for more complete combustion of the fuel, leading to a denser power output per cycle. In addition, diesel engines produce more power at lower RPMs, which directly contributes to their high torque output. Torque is generated effectively when the engine is under load, and diesel engines excel in producing this torque because of their robust construction and capability to handle higher pressures.

Both technicians may have provided insights into these characteristics, reflecting an understanding of why diesel engines generate such high torque at low speeds. Their viewpoints could encompass aspects like fuel type, combustion characteristics, and the relationship between RPM and torque output unique to diesel engines. Consequently, acknowledging both technicians as correct reinforces the comprehensive understanding of diesel engine performance attributes.