while the Yanmar in this clip is simply idling at a lower rpm than it’s really intended to. The fact it can idle so low without stalling is impressive on its own. I started poking around Yanmar ...

However, the most common car acronym is the RPM, and every car with an internal ... mainly to address the lack of low-end torque when the engine's not spinning to its heady 8,000-plus RPM redline.