จาก
http://en.wikipedia.org/wiki/Flat_engineผมขอเน้น
True boxers have each crankpin controlling only one piston/cylinder while 180° engines, which superficially appear very similar, share crankpins.
- The boxer engine has corresponding pistons reaching top dead centre (TDC) simultaneously.
- The 180° V engine has corresponding pistons sharing a crankpin on the crankshaft and reaching TDC half a crankshaft revolution apart. They may use regular connecting rods side by side, or use a master/slave system, or a fork-and-blade system. Flat engines with more than eight cylinders are most commonly V engines.[clarification needed]
Boxer engines must not be confused with opposed-piston engines, which are essentially the inverse, with two pistons compressing a single combustion space. These can be used in vehicles such as tanks.
เพิ่ม Clip
อันแรกเป็น Flat V12
อันที่สองเป็น Boxer
