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CAT Engines Course ( Part 1)

Thảo luận trong 'Xe máy công trình' bắt đầu bởi hochoi, 25/1/10.

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    This presentation is about the 3500 Series Engine. One arrangement of the 3516 Vehicular Engine is used for most illustrations.

    The 3500 Series Engine is a diesel engine with a
    4-stroke cycle. It has a 60 degree “Vee” angle between the cylinders of the block. The cylinder bore is 170 mm (6.7 inch) and the piston stroke is 190 mm (7.5 inch). Each cylinder has approximately 4310 cu. cm. (263 cu. in.).

    Standard engine rotation is counterclockwise. See
    the Service Manual for Firing under specs (V8
    and V16).

    Looking at the right side of the engine, we see the:
    1. cylinder heads, block and oil pan
    2. valve covers
    3. rear lifting eye
    4. turbocharger (one of two)
    5. oil cooler and oil pump
    6. fuel priming pump, two secondary fuel filters,
    and fuel transfer pump
    7. crankcase filler opening and dipstick
    8. air starting motor
    9. water pump; and
    10. alternator

    NOTE: This is the first Caterpillar engine designed to
    metric dimensions. All engines in the series have the
    same bore and stroke and have the push rod valve
    design. All engines are turbo charged and
    aftercooled. All 3500 Series Engines have direct
    injection combustion systems with a unit injector
    fuel system.

    On the front of the engine, we see:
    1. the Caterpillar 3161 governor
    2. the water pump and the line to the aftercooler
    3. the thermostat housing and the bypass line
    4. the vibration damper, and crankshaft pulley
    The fan pulley and idler pulley is driven from the
    crankshaft pulley belts. The fan pulley and idler
    pulley each have an adjustment to adjust the
    tension of the fan (drive) belts.
    The plates shown on the right can be removed to install
    other accessories on the auxiliary drives. The
    governor and crankcase breather can be installed
    on either the left side or right side.

    On the left side we see:
    1. the oil supply line (arrow)
    2. the oil filter base/housing and four oil filters
    3. the oil supply and oil drain for the turbocharger
    4. the fume disposal group
    Also on the rear we see three auxiliary drives above the
    flywheel housing. Two turbochargers are
    installed on this engine. This is the location of
    the turbochargers on the vehicle arrangements.
    Turbochargers can also be installed above the
    rear of the engine for industrial generator set and
    marine engines (shown later)

    This is the flywheel housing and the flywheel. The
    standard vehicular flywheel housing is SAE No.
    “O”. The flywheel housing for the Marine,
    Industrial, and Generator Set is SAE “OO”. The
    SAE No. “O” is available for Marine, Industrial,
    and Generator Set engines.

    The starting motor is normally installed on the right
    side of the engine. An air starting motor is
    shown. There are two optional locations for the
    starting motors.

    . . . on the left side. The two plates cover the openings
    for the optional locations for the starting motors.
    Air or electric starting motors are also available.

    The serial number plate is on the left side of the
    camshaft compartment near the rear of the
    engine block.
    Also you can see the location of the camshaft
    compartment covers and the crankcase
    compartment covers.

    The serial number plate has the model number, serial
    number, arrangement number, and modification
    number. All numbers must be included on
    Service Reports with warranty claims and when
    ordering parts.

    This information plate is on the right side of the engine.

    On later engines, the plate is on the left-hand side in
    front of the cylinder head. This plate has the
    high idle rpm, full load rpm, power setting and
    other important engine information.
    Other plates and transfers (not shown) give you
    information about valve adjustment.​

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