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Engine Design

All articles tagged with #engine design

Maserati's Six-Valve V6: A Bold Idea That Proved Too Ambitious
technology1 month ago

Maserati's Six-Valve V6: A Bold Idea That Proved Too Ambitious

Maserati built a 2.0L twin-turbo V6 prototype called the 6.36 with six valves per cylinder and a cam-rocker system to run three valves per cylinder, claiming about 257 hp at 7,200 rpm and a 34% larger gas-flow area over four-valve designs, but the project was shelved. Yamaha similarly tinkered with six- and seven-valve configurations on the FZ750 and faced detonation and high development costs, illustrating diminishing returns after roughly five valves per cylinder; five-valve setups later appeared in cars from Ferrari, Mitsubishi, Audi, and VW, while the six-valve concept remained an ambitious, unproduced footnote.

A Tiny Engine Aims to Redefine Two-Stroke Power: INNengine's e-Rex
technology2 months ago

A Tiny Engine Aims to Redefine Two-Stroke Power: INNengine's e-Rex

INNengine’s e-Rex (and Rex-B) are ultra-compact, four-cylinder engines with eight opposing pistons on thrust plates, marketed as “1Stroke” even though the cycle operates as a two-stroke—combustion/exhaust in one pass, intake/compression in the other. The design aims for high power density, smooth balance, no traditional valve train or oil burning, and on-the-fly variable compression. INNengine claims about 120 hp from a 500cc unit and has tested it in a Mazda Miata, envisioning it as a range-extender rather than a replacement for conventional engines.

"The Bizarre Engineering Marvel: Unveiling the Commer Knocker Engine"
automotive2 years ago

"The Bizarre Engineering Marvel: Unveiling the Commer Knocker Engine"

The Commer Knocker, also known as the TS3, was a unique engine used by British commercial truck manufacturer Commer in the 1950s and '60s. It featured an opposed-piston design with two pistons in each cylinder, and one crankshaft instead of two. The TS3 had a distinctive idle sound and was remarkably powerful for its size, producing up to 117 horsepower and 310 lb-ft of torque. However, production ceased in 1972 when the four-cylinder TS4 replaced it.

automotive2 years ago

"Revolutionary 500cc 'One-Stroke' Engine Transforms Miata Performance"

Spanish company INNengine has developed a unique 500cc 'one-stroke' engine that defies traditional design, weighing just 85 pounds and producing 120 horsepower. The engine features opposed-pistons and lacks connecting rods, resulting in improved balance and reduced noise and vibration. It utilizes a single-stroke combustion cycle and can be used as a range extender in electric vehicles, offering a lightweight and cost-effective solution for extending their range. While it may not directly power cars, the INNengine has the potential to revolutionize the automotive industry.