The two-stroke engine is mostly a piece of history today, but there was a time when some of the coolest developments in engine technology were two-cycle engines. Here’s how two-stroke technology rose ...

Anyone who appreciates simplicity of design and efficiency of operation has to like small two-stroke-cycle engines that power construction tools such as cut-off saws, rammers and breakers. Producing ...

SAE Transactions, Vol. 102, Section 3: JOURNAL OF ENGINES (1993), pp. 1903-1910 (8 pages) Anaerobic digestion is a popular method of treating sewage sludge. Biogas or sewage gas is a byproduct of this ...

This paper presents a single-cycle gas simulation of the scavenging process in a twostroke cycle engine. The apparatus used is described in the most detailed fashion and the experimental procedure is ...

As PopMech’s autos editor, I obviously consider myself a car guy. But when it comes to two wheels, the capabilities of modern motorcycles astonish me. We now have road-legal bikes that produce over ...

As explained in Part 1 of this series (SW May 2021), stroke rate and stroke length typically vary inversely. When a swimmer increases stroke rate, he/she usually decreases stroke length. When a ...

The opposed-piston engine has been around for over 100 years and is more efficient in almost every way. The engine has no traditional valves, cams, or camshafts, and no head, so it’s simpler and ...

Unit shown in the bottom of the photograph has been removed to show operation of the V-drive which is base of V-four engine.Ring gear shown on lower shaft of top unit is driven by a pinion mounted to ...

According to Wacker, a new carburetor is now used on the company’s two-stroke-cycle rammers, allowing for easier, faster starting. The carburetor features a purge bulb that allows air to be expelled ...

Kawasaki has plans to develop a range-extender hybrid with a supercharged two-stroke, four-cylinder engine charging a battery that powers an electric motor driving the rear wheel. It seems like a ...