bottom dead center การใช้

• Cylinder displacement is the volume the cylinder holds between bottom dead center and top dead center.
• The expansion stroke of the steam engine covers piston travel from top dead center to bottom dead center.
• Link Motion mechanical is yet another option, this provides a slide slow down near BDC / bottom dead center for soft touch tooling.
• Instead of achieving higher pressure in the cylinder, the inlet valve can stay open after the piston reaches bottom dead center while the air still flows in.
• The pistons in the Lanchester engine moved so that one piston was on top while the other was at bottom dead center, creating an uneven firing cycle.
• Compression ratio is the ratio of the cylinder volume with the piston at bottom dead center, when compared to the remaining volume with the piston at top dead center.
• Mechanical presses have a full tonnage rating point above BDC / Bottom Dead Center, normal full tonnage rating points are . 187 ", . 25 " & . 5 ".
• Gasoline engines take in a mixture of air and gasoline and compress it by the movement of the piston from bottom dead center to top dead center when the fuel is at maximum compression.
• The gas spring is compressed, and while the piston is near the bottom dead center ( BDC ), fresh air and fuel are injected in the combustion chamber, expelling the exhaustion gases from the chamber.
• The diaphragm will continue to allow pressure to the diaphragm, and during the subsequent rotation, the eccentric will pull the diaphragm back to bottom dead center, where it will remain until the inlet valve to the carburetor reopens.
• The " top dead center " ( TDC ) of a piston is the position where it is nearest to the valves; " bottom dead center " ( BDC ) is the opposite position where it is furthest from them.
• In a reciprocating engine, it is that portion of the cycle when the pistons move from TDC ( top dead center ) to BDC ( bottom dead center ) and the fuel-air mixture is drawn into the cylinders . . ..
• Bryant refers to a valve remaining open " for at least 90 degrees crank angle past bottom dead center, " and Caterpillar says the same process would occur when conditions were " at least 90 degrees crank angle after bottom dead center ."
• Bryant refers to a valve remaining open " for at least 90 degrees crank angle past bottom dead center, " and Caterpillar says the same process would occur when conditions were " at least 90 degrees crank angle after bottom dead center ."
• A two-cylinder locomotive has its two cranks " quartered "  set at 90?apart  so that the four power strokes of the double-acting pistons are evenly distributed around the cycle and there are no points at which both cylinders are at top or bottom dead center simultaneously.
• But due to geometry, a piston descending from top dead center will always move quicker through the first 30 degrees of crankshaft travel than a piston moving upward from bottom dead center, meaning that more mass is moving downward than is moving upward, causing a shaking in the vertical plane.
• Where p _ 0 \; is the cylinder pressure at bottom dead center which is usually at 1 atm, \ text { CR } is the compression ratio, and \ gamma \; is the specific heat ratio for the working fluid, which is about 1.4 for air, and 1.3 for methane-air mixture.