pentroof การใช้

Sherman missed a pENTROOF ) but at that point, the game was already in the bag.
A special compact pentroof combustion chamber design with central spark plug location was incorporated to optimize engine efficiency.
The 16-valve, single-overhead-camshaft cylinder head features four valves per cylinder and pentroof combustion chambers.
SOHC engines use two valves per cylinder and DOHC versions use four valves per cylinder with a pentroof chamber, the valve angle being 22 degrees from vertical.
Because the spark plug is located closer to the vortex consisting of air / fuel mixture, ignition arises in an area of the pentroof-design combustion chamber where fuel density is higher.