It is a single-cylinder, air-cooled,
four-stroke engine equipped with electronic injection and three-valve per cylinder distribution.
Forget all those complicated valves and camshafts of the
four-stroke engine - the two-stroke technically only has two moving parts (the piston and the crankshaft).
This new version features a 125-cubic-centimeter, single-cylinder,
four-stroke engine and a four-speed transmission.
The
four-stroke engine is larger and more expensive (Palmer, 2013).
The vehicle is likely to share the 154.9 cc air-cooled, single cylinder,
four-stroke engine that currently powers the company's top-selling motorcycle, Gixxer.
Among the topics are safety first, basic engine operation and configuration,
four-stroke engine top-end inspection, motorcycle charging systems and direct current circuits, and motorcycle maintenance and emission control.
This engine is no cheap alternative but uses conventional, well-developed,
four-stroke engine design practice.
Arcturus has also converted the JUMP 15's ultra reliable Honda
four-stroke engine to fuel injection.
The most promising one is based on the design combining a
four-stroke engine with a kind of a steam engine.
To signify the change from a two-stroke to a
four-stroke engine, the DKW marque was dropped in favour of Audi, a name which had not been used since before the Second World War.
Bajaj will launch seven variants of the RE Compact which will come with either a two-stroke or a
four-stroke engine. The company also plans to launch a diesel variant, adding to the three other fuel types of petrol, CNG and LPG the auto rickshaws will run on.
four-stroke engine - an internal-combustion engine in which an explosive mixture is drawn into the cylinder on the first stroke and is compressed and ignited on the second stroke; work is done on the third stroke and the products of combustion are exhausted on the fourth stroke