At first glance, the concept of engine compression is simple enough:It's the ratio of the volume of the combustion chamber and bore when thepiston is at bottom dead center (BDC) versus when it is at ...

Let's discuss something that is well known by diesel mechanics and hard-core enthusiasts but may not be fully understood by new diesel owners or people who may have heard the term "compression ...

To a lot of us, engines are a bit like women. We can usually figure out when something is wrong, but we don't know for sure what makes them tick. That's because engines, like the fairer sex, are ...

SAE International Journal of Engines, Vol. 14, No. 6 (2021), pp. 805-820 (16 pages) The present study shows the impact of multiple injectors with distinctive spray and injection angles on engine ...

Automakers once bet big on bizarre ideas—from swirling airflows to variable compression—and the results were as fascinating ...