Trunk-type diesel engine pistons are most effectively cooled by heat()
() is sometimes used for piston cooling since leaks into the crankcase would not cause problems.
In a medium speed diesel engine, a trunk type piston may be cooled by() Ⅰ.oil circulation though passages in the piston crown Ⅱ.heat transfer through piston rings and liner wall
Under rotary pumps are the gear, (), cam-and-piston and screw types.
The piston ring grooves for a standard engine are ()
Trunk type diesel engine pistons are effectively cooled when heat is()
The piston rings are manufactured with a diameter () the bore of the cylinder.
Large marine diesel engines of crosshead construction generally have two systems of lubrication: a total loss system feeding the () and a recirculation system lubricating the running gear and cooling the piston.
In a radial piston pump, reversal and control of fluid flow are accomplished by moving the ().
These piston rings are so badly worn that they must be ().
Around the combustion chamber, all the main components are bore cooled to give low strains and the smallest, circumferentially symmetric deformations for good sealing between piston rings and liner()
The scavenging air ports are located at () that they are just exposed by the upper edge of the piston when the piston is in the bottom dead center position.
The cylinders, with cooling jackets, are () to the engine frame by eight tie rods.
Ring groove inserts are occasionally used on aluminum alloy piston to()
() providing lubricating films, oil used in marine diesel engines have to remove heat from oil cooled piston.
Corrosion inhibitors and/or soluble oils are added to diesel engine cooling systems to ()
The piston cooling system may employ similar components, except that () is used instead of a head tank.
There is a () system lubricating the running gear and cooling the piston and sometimes lubricating the cylinders.
Cylinders of marine diesel engines are normally cooled by ().
The statements about The Wild Swans at Coole are true______.
Orchids are elegant while bamboo gives people coolness in scorching summer.
Smoking, makeup, and ______ earrings are considered cool by some young students.
The piston crown employs the usual jet-shaker principle with an arrangement of cooling bores in the crown so that the surface temperatures of the crown are moderate with a very even distribution.
On engines having oil cooled pistons the lubricating oil pre-heater must be put into operation and the rate of heating so ______ that the temperature of the piston cooling oil returns are 32 to 35℃ over a period of at least two hours.