| The integration of the new engine system “SPACE 5” and new hydraulic system “SIH:S” has created 18% fuel efficiency improvement in comparison with our conventional model. |
 |
| 1. Powerful 2. Economy 3. Clean 4. Silent 5. Strong |
| “SPACE5” is a new engine system consisting of five (5) special features. |
|
Engine
A newly developed ISUZU engine
4HK1X complies with Emission Regulations U.S. EPA Tier III and
EU Stage IIIA. This produces bigger
output and torque, and far better
fuel consumption than the previous
model. |
Comparison of engines
| |
SH240-3 |
SH240-5 |
Merit |
| Name of engine |
ISUZU-6BG1T |
ISUZU-4HK1X |
|
| Type |
12-valve OHV |
16-valve OHC |
|
| Displacement cc
|
6494 |
5193 |
|
| Number of cylinders - Dia. x Stroke mm |
6-105 x 125 |
4-115 x 125 |
|
| Rated output kW/min-1 |
121/2,150 |
132/2,000 |
Higher output (+9%) |
| Max. torque Nm/min-1 |
562/1,800 |
636/1,500 |
Higher torque (+13%) |
| Size (Length-Width-Height) mm |
1204-768-961 |
1020-829-1012 |
|
| Cylinder block |
Bearing CAP |
Ladder frame |
High rigidity/low noise |
| Fan belt |
V-Belt |
Poly V-Belt |
Long life |
|
| Common Rail Type High Pressure Fuel Injection System |
Cooled EGR System |
16 valve OHC Turbo Engine with Inter-Cooler |
| The system is equipped with a common rail type high-compression fuel injection system, which permits high-precision injection from multiple injection under ultra high-pressure of more than 1600 atm. Precise control of injection time and injection quality at that rate of 1/1000 second optimizes combustion, improves combustion efficiency, and reduces PM (particulate matter) substantially. |
The EGR (Exhaust Gas Recirculation) mixes exhaust gas, which is once exhausted, with the air intake that is taken in so as to lower the combustion temperature, thereby reducing NOx (nitrogen oxide). Adoption of the cooled EGR system, in which a water cooler is installed in the middle of the re-circulation pipe, permitting further decrease in the intake temperature, ensuring a better NOx reduction effect than the ordinary EGR.
|
When the inter-cooler cools the intake air, which is compressed by a turbocharger and has reached a high temperature, the density of the air increases and the suction efficiency increases. Therefore, NOx and PM can be reduced substantially, permitting high output and improvement of fuel efficiency simultaneously.
|
 |
 |
 |
|
 |
| ● |
50% |
increase in bucket closing speed |
● |
7% |
increase in traction force |
| ● |
5% |
improvement in arm closing speed under heavy excavation |
● |
3% |
increase in arm digging force |
| |
※As compared with SH240-3 |
|
|
 |
Real Digging Power |
|
 |
| The true digging force can not be expressed by a maximum digging power figure listed in sales materials. With a much improved hydraulic system and by adopting a larger arm cylinder, the arm-in motion speed slowdown is minimized by eight percent (8%) in comparison with the previous model. The digging power when combined with the attachment speed in motion convey to the operators "real digging power".
|
| SP "Speed Priority" mode has been developed, which is not available in competitors models nor in our previous model. This will create biggest productivity in its class with more economical fuel efficiency even in comparison with the Heavy mode of our previous model. In addition, the throttle control is simple to use. |
| ●SP mode: 7%increase in workload |
| ※As compared with SH240-3 (H mode) |
| The digging power increases automatically in quick response to the working conditions without switching operations during heavy -duty digging work. It is SUMITOMO'S original design and continues for 8 seconds.
|
|
Quick and Smooth Control Response |
|
|
| A total review of the hydraulic circuit and miscellaneous hydraulic settings guarantee speedy and precise operation through a smooth control lever. |
|
 |
|
Multifunctioning Capability for Upper and Travel Operation |
|
|
| With the new hydraulic circuit, travel motion slowdown will not be experienced even during the combined operation of attachment and swing motion when traveling. |
|
 |
| New engine system |
|
New hydraulic system |
|
|
+ |
|
= |
|
| 18% |
reduction in fuel consumption compared to SH240-3 (H mode) |
|
| ※The fuel consumption may vary from time to time depending on si-te and working conditions, operator skill and other circumstances.
|
|
| Greater productivity and increased working efficiency |
|
|
Hydraulic Oil Flow Control |
 |
|
| In the case of sudden lever movement and high load activation, the newly developed hydraulic control system reduces the main pump oil flow intentionally and keeps the engine speed at a constant level. This enables a reduction in fuel consumption. In addition, this also reduces the level of exhaust smoke due to excessive fuel injection. |
|
Reduction of Hydraulic Oil Flow at Swing |
|
|
| The hydraulic oil quantity required at the time of sudden swing motion is limited. The new hydraulic system can start the oil flow volume at the minimum level and then allow it to increase on demand. This optimum oil flow control significantly improves the fuel efficiency. |
|
Reduction in Pump Stand-by Pressure |
|
|
| Reducing pump oil flow pressure during stand-by minimizes the load on the engine. This also improves fuel consumption. |
|
Increased Pump Efficiency |
|
|
| The new modified hydraulic pump structure lowers the oil leak volume in the pump which means improved pump efficiency and improved engine fuel efficiency. |
|
Mode Selection by Throttle |
|
|
Mode selection by pressing the button in our previous model sometimes cause inconveniences for the operator. The throttle control system has been upgraded and the new system "A" mode which stands for "Adjustment Mode" now covers the 3 previous modes of "Auto, Standard and Light". In addition there is "H" (Heavy) mode and "SP" (Speed Priority) mode, and the hydrostatic pump oil flow will be regulated automatically in each of the 3 modes respectively.
The SP mode is added to the operation mode. Furthermore, the A (Adjustment) mode is added to the SP and H modes, respectively. In comparison with the H mode of Dash 3, the SP mode has reduced the fuel consumption by 15%, and the H mode of Dash 5 has reduced the fuel consumption by 20% as compared with Dash 3.
|
|
 |
| Throttle knob position |
1 |
2 |
3 |
4∼8 |
9∼15 |
| Engine speed |
1,800 |
1,700 |
1,600 |
1,599∼1,300 |
1,299∼1,000 |
| Operation mode |
SP |
H |
A |
| Automatic power boost |
Automatic |
Constant |
|
|
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