Some articles on pumping losses, losses:
... “These pumping losses depend on the opening and closing of the throttle valve ... The losses are high when the throttle valve tends to close and are low at wide open throttle ... Thus the pumping losses are inversely proportional with engine load” ...
... Another way to decrease the pumping losses associated with low engine speed, high vacuum conditions is by closing the intake valve earlier than normal ... required to fill the cylinder is relatively high, so Early intake valve closing greatly reduces pumping losses ... Studies have shown early intake valve closing to reduce pumping losses by 40%, as well as to increase fuel economy by 7% ...
Famous quotes containing the words losses and/or pumping:
“Hold back thy hours, dark Night, till we have done;
The Day will come too soon.
Young maids will curse thee, if thou stealst away
And leavst their losses open to the day.
Stay, stay, and hide
The blushes of the bride.”
—Francis Beaumont (1584-1616)
“It is by teaching that we teach ourselves, by relating that we observe, by affirming that we examine, by showing that we look, by writing that we think, by pumping that we draw water into the well.”
—Henri-Frédéric Amiel (18211881)