A 4-stroke engine requires four of these movements (or two rotations of the crankshaft) to complete a power cycle in which air and fuel are drawn into the combustion chamber, compressed ...

QUESTION: What was the last car to have a two-stroke engine? As strict Western emissions standards were developed, two-stroke models were phased out. However, this was not the case in the ...

Porsche has patented a revolutionary six-stroke ... two top dead-centre and bottom dead-centre states. Put simply, there isn't a set compression and stroke, as per a fixed-crank four-stroke engine.

The development could mark a major evolution in combustion engine technology, reviving innovation not seen since the days of the two-stroke cycle. In this regard, the German automotive company has ...

As regulations change and two-stroke engines evolve to deal with the new normal, onboard monitoring and cylinder inspection is vital for keeping propulsion systems going. If one fails it can be very ...

this six-stroke engine includes an additional compression and power stroke between the standard power and exhaust phases. The concept involves two three-stroke sequences: intake-compression-power, ...

A patent from Porsche shows it is working on an innovative yet complex new engine based on a six-stroke principle ...

But now, Porsche has filed a patent to make a 6-stroke engine. The bottom line here is the introduction of two more strokes: Intake, compression, power, then compression, power, exhaust.

This diesel engine gets its 6.7-liter displacement size from a bore of 4.21 inches and a stroke length of 4.88 inches. Cummins offers two different variations of the engine: a standard output and ...

This is commonly how modern combustion engines work. Some engines use fewer strokes per cycle. A two-stroke engine accomplishes everything in two movements of the piston. But it's sloppier ...

However, due to Porsche’s latest engine design, two more strokes change the cycle completely. The six-stroke engine provides two scavenge and two pumping strokes, offering twice the power compared to ...