Prime Power
It corresponds to the prime rated power (PRP) of GB/T 2820 and ISO 8528, and refers to the maximum power accessible at the
variable load for an unlimited running hours per year, with the maintenance intervals and procedures being carried out as prescribed
by Yuchai, and the allowed average output power within 24 h shall not be higher than 70% of the prime power.
Standby Power
It corresponds to the emergency standby power (ESP) of GB/T 2820 and ISO 8528, and refers to the maximum power accessible at
a certain variable load series in the event of a utility power outage or under test conditions for an limited running hours up to 200 h
per year, with the maintenance intervals and procedures being carried out as prescribed by Yuchai. The allowed average output
power within 24 h shall not be higher than 70% of the standby power.
Main technical parameters
Number of cylinders ……………………………………………………….. 6
Configuration ………………………………………………. Vertical, in-line
Aspiration ………………………….. Turbocharged, air-air intercooled
Combustion system ……………………………………. . Direct injection
Compression ratio ……………………………………………………… 14:1
Bore ………………………………………………………………….. . 152 mm
Stroke ……………………………………………………………….. . 180 mm
Displacement ………………………………………………………… . 19.6 L
Rotation Counterclockwise (viewed from the flywheel end)
Firing order (viewed from the belt pulley end) ……….1-5-3-6-2-4
Dry weight (without radiator) …………………………………. .1900 kg
Wet weight (without radiator) ……………………………….. . 2000 kg
Overall dimensions
Length (from front end of radiator to rear end of air filter)
….1973 mm
Width .1388 mm
Height (with radiator and mounting support). …….. ….1680 mm
Centre of gravity (dry engine, with the center
of the rear end face of the flywheel shell as
the origin)
From the rear end face of the flywheel ..799 mm
Height relative to the center of the crankshaft .181 mm
Centerline deviation relative to the crankshaft center gravity
..23 mm
Moments of rotation inertia
Engine ………………………………………………………………. 6.25 kg·m2
Flywheel ……………………………………………………………. 4.08 kg·m2
Performance rating
Speed droop …………………………………………………………….. ≤1 %
Steady state speed band …………………………………………. ≤0.5 %
Test conditions
Ambient temperature …………………………………………………. .25 ℃
Atmospheric pressure……………………………………………. . 100 kPa
Relative humidity ………………………………………………………… 30 %
Max. operating intake resistance ……………………………… .≤5 kPa
Exhaust backpressure limit …………………………………….. ≤10 kPa
Fuel temperature (fuel inlet pump) …. ..38±2 ℃
Attention: Unless otherwise explicitly specified, all
parameter data are measured under standard test condition
as above. If the engine is operated under other test
conditions rather than the test condition above, it shall be
adjusted properly according to the actual environment.
Contact the Yuchai Technical Service Department for
details.
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