Maar we willen graag die mx-3 met miller blok zien

Groetjes M&M
Moderator: Moderators
A Miller-cycle engine leaves the intake valve open during part of the compression stroke, so that the engine is compressing against the pressure of the supercharger rather than the pressure of the cylinder walls. The effect is increased efficiency, at a level of about 15 percent.
Miller Cycle is an interesting concept. Invented by American Ralph Miller rather than Mazda in 1940s, it changed the long-standing basic principle, Otto cycle. Conventional Otto cycle engines have 4 stages in each cycle - intake, compression, explosion (expansion) and exhaust. Each of them takes roughly equal time. Miller Cycle engine differs from it by delaying the inlet valves closing well into the compression stroke. What is the result of this ?
In Mazda's Miller Cycle V6 engine, inlet valves close at 47 degrees after BDC (bottom dead center, ie, the lowest position of piston during a cycle). This equals to 20% of the height of stroke. In other words, during the first 20% of the compression stroke, the intake valves remain opening, thus air flows out without compression. Real compression activated during the remaining 80% stroke. Therefore, the real effective capacity of the engine is only 80% of the volume of combustion chamber. Compression ratio is decreased from 10 : 1 to slightly under 8 : 1.
martinenijenhuis schreef:Nou, niet iedereen wil alles aan de grote klok hangen![]()
Maar eens komen er toch wel foto,s van op het net, en dit verhaal
gaat echt al jaren te ronde, maar er is geen 1 foto en is na
al die jaren nog steeds niet gespot, dat is wel heeel sterk !!!
Groetjes M&M