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6

Powerful and Environmentally Friendly

Fuel-saving engine and

hydraulic technology

The PC490-10 features variable

speed matching of the engine and

hydraulic pump, and an automatic

low idle. The new engine and pump

control technology lower total fuel

consumption and guarantee ef-

ficiency and precision during single

and combined movements.

Adjustable Eco-gauge and idle

caution

The new Eco-gauge can be set to

target a fuel consumption value,

encouraging the operator to work

as efficiently as possible. And to

further avoid wasting fuel when

the machine is not actually work-

ing, a standard-fit idle caution is

displayed if the engine idles for 5

minutes or more.

Komatsu Diesel Particulate Filter (KDPF)

Komatsu’s high efficiency DPF captures

more than 90% of particulate matter. It

includes a special oxidation catalyst with fuel

injection system that can incinerate trapped

particulates by either active or passive re-

generation with no need to interrupt machine

operations.

Exhaust Gas Recirculation (EGR)

Cooled EGR is a technology well-proven

in current Komatsu engines. The increased

capacity of the EGR cooler now ensures

very low NOx emissions and a better engine

performance.

Komatsu Variable Geometry Turbo (KVGT)

The KVGT provides optimal air flow to the

engine combustion chamber under all speed

and load conditions. Exhaust gas is cleaner,

fuel economy is improved while machine

power and performance are maintained.

High-Pressure Common Rail (HPCR)

To achieve complete fuel burn and lower

exhaust emissions, the heavy duty High-

Pressure Common Rail fuel injection system

is computer controlled to deliver a pre-

cise quantity of pressurised fuel into the

redesigned engine combustion chamber by

multiple injections.

Variable nozzle

Oxidation catalyst

Soot filter

KVGT

EGR valve

Cooler

EGR cooler

Komatsu Closed Crankcase Ventilation

(KCCV)

Crankcase emissions (blow-by gas) are

passed through a CCV filter. The oil mist

trapped in the filter is returned back to the

crankcase while the filtered gas is returned

to the air intake.

Injector

Electronic

Control Unit

Common rail

Supply pump

KVGT

KCCV

New Komatsu engine

technology

The powerful and fuel-efficient

Komatsu SAA6D125E-6-A en-

gine in the PC490-10 delivers

270 kW/362 HP and is EU Stage IIIB/

EPA Tier 4 interim certified. To max-

imise power, fuel efficiency and emis-

sion compliance, it is turbo charged

and features direct fuel injection, air-

to-air after cooling and cooled EGR.