Spesifikasi Standard Excavator EX3600-6

Sahabat teknisi, menanggapi pertanyaan seorang pembaca pada artikel fitur terbaru pada EX3600-6, maka berikut ini teknisiberat postingkan artikel mengenai spesifikasi standard pada Excavator EX3600-6. Semoga artikel kali ini dapat menjawabnya.

 

ENGINE

- 140 A alternator
- Heavy-duty type air cleaner with dust ejector
- Cartridge-type engine oil filter
- Cartridge-type engine oil bypass filter
- Cartridge-type fuel filter
- Fan guard
- Isolation-mounted engine
- Auto-idle system
- Emergency engine stop system
- Hydraulic drive cooling-fan system

HYDRAULIC SYSTEM

- E-P control system
- OHS (Optimum Hydraulic System)
- FPS (Fuel-saving Pump System)
- Hydraulic drive cooling-fan system
- Forced-lubrication and forced cooling pump drive system
- Control valve with main relief valve
- Suction filter
- Full-flow filter
- Bypass filter
- Pilot filter
- Drain filter
- High-pressure strainer

CAB

The sturdy cab, with the top guard conforming to OPG Level II (ISO), helps protect the operator from falling objects. Fluid-filled elastic mounts. Laminated glass windshield. Reinforced/tinted (bronze color) glass side and rear windows. Parallel-link-type intermittent windshield wiper. Front windshield washer. Adjustable reclining seat with air suspension. Footrest. Air horn with electric compressor. Auto-tuning AM-FM radio with digital clock. Seat belt. Storage spaces. Floor mat. Air conditioner with defroster. Rearview mirror. Evacuation hammer. Emergency escape device. Trainer's seat. Pilot control shut-off lever.

MONITOR SYSTEMS

- Meters:
Hourmeter. Fuel gauge. Hydraulic oil temperature gauge. Engine coolant temperature gauge. Tachometer. Engine oil pressure gauge. Engine oil temperature gauge. Battery voltage gauge. Ambient temperature.
- Pilot lamps (Green):
Prelub. Auto-Idle. Travel Mode.
- Warning lamps (Red):
Allternator. Engine stop. Coolant overheat. Hydraulic oil level. Auto-Lubrication. Fast-filling. Tension. Electric lever. Emergency engine stop. Top valve. Engine over run. Coolant level. Engine oil pressure. Pump transmission oil level indicator.
- Warning lamp (Yellow):
Exhaust temperature. Fuel temperature. Engine warning. Hydraulic oil overheat. Stairway position. Electrical equipment box. Pump contamination. Air cleaner restriction.
- Alarm buzzers:
Overheat. Engine coolant pressure. Engine coolant level. Fuel temperature. Engine oil pressure. Engine oil temperature. Air intake manifold temperature. Crank case pressure. Pump transmission oil level. Hydraulic oil level. Stop valve close. Fast-fill system panel position (option) Ladder position. Electric lever fault.

DATA LOGGING SYSTEM

- DLU (Data-logging unit) continuously records performance of the engine and the hydraulic system. The record can be downloaded by PC and PDA.

LIGHTS

- 9 working lights. 2 entrance lights. 7 maintenance lights. 2 cab lights.

UPPERSTRUCTURE

- Lockable machine covers
- 40 200 kg counterweight
- Hydraulic drive grease gun with hose reel
- Folding stairs with wide steps
- Swing parking brake

UNDERCARRIAGE

- Travel parking brake
- Travel motion alarm device
- Hydraulic track adjuster with N2 gasaccumulator and relief valve
- 1 270 mm triple grouser shoes

MISCELLANEOUS

- Standard tool kit
- Stairs and handrails (Meeting ISO)
- Recirculation air filter for air conditioner
- Ventilation air filter for air conditioner
- 12 V power terminal board
- Stop valve for transport and reassembly
- Auto-lubrication system (Lincoln) for front-attachment pins, swing bearing, and center joint

OPTIONAL EQUIPMENT

Optional equipment may very by country, so please consult your Hitachi dealer for details.

- Wiggins couplers
- High brightness working lights.
- Back and right side color monitor camera.
- Satellite data transmitting system.
- Travel motor guard.
- Travel device guard.
- Electric oil pump to draw hydraulic oil from suction and return pipe lines.

Konstruksi Dan Proses Delivery Fuel Di Dalam Fuel Injection Pump

Sahabat teknisi, kembali lagi ke topik masalah engine, kali ini saya akan melanjutkan pembahasan pada postingan sebelumnya tentang fuel injection pump.
• Struktur dan cara kerja pompa injeksi tipe in-line
Semua model dari pompa injeksi bahan bakar pada dasarnya memilki struktur dan cara kerja
yang sama. Berikut ini akan ditunjukkan beberapa contoh struktur dan cara kerja dari beberapa
model pompa injeksi bahan bakar model A, model B, dan model P).

- Proses pengiriman bahan bakar
Rangkaian komponen yang terdiri atas plunger dan plunger barrel dinamakan dengan elemen pompa (pump element). Di atas telah ditunjukkan berbagai macam tipe pump element dari pompa injeksi bahan bakar.

Plunger akan bergerak naik dan turun untuk mensupali bahan bakar. Plunger bergerak naik dan turun setiap satu kali gerakan camshaft. Tingginya pergerakkan dari plunger selalu tetap (berdasrkan camlift).
Struktur plunger dan plunger barrel harus sangat presisi, sehingga mampu mengirimkan bahan bakar ke nozzle dengan tekanan yang cukup tinggi. Pergerakkan dari plunger ditunjukkan pada gambar di atas, baik pada pump element model A maupun model P memeilki prinsip kerja yang sama. Bahan bakar masuk dan keluar melalui lubang inlet/outlet port. Konstruksi plunger barrel tetap (fix) ke rumah pompa injeksi (pump housing). Plunger mengatur pengiriman jumlah bahan bakar (injection rate) dengan berputar. Perputaran dari plunger diatur oleh control rack (model A dan B) atau control rod (model P).

Fitur - Fitur Terbaru Pada Excavator Hitachi EX 3600-6

Giant-Sized Productivity Based on Hitachi's Theory of Evolution.

Each Hitachi generation listens to the needs of the work site and gives birth to an even-better new generation.

Bucket Passes Bucket Passes to Dump Trucks

Powerful Single Engine-Ready for the task.

Time-proven Cummins diesel engine produces a total of 1 450 kW (1 944 HP) for handling the big excavation jobs.

1 450 kW (1 944 HP)

Emission Control Engine-Helping to protect our environment.

Conforms to U.S. EPA Tier II emission regulations.

Efficient E-P Control-Adjusts power output to the work being performed.

Hitachi's computer-aided Engine-Pump Control (E-P Control) coaxes optimum efficiency from the engine and hydraulic pumps. This innovative system senses load demand and controls engine and pump output for maximum operating efficiency.

Larger Bucket Provides High Work Capacity.

Loading shovel bucket : 21.0 m³

Backhoe bucket : 22.0 m³

Maximum Excavating Force.

- Loading shovel

Arm crowding force : 1 200 kN (122 000 kgf)
Breakout force : 1 050 kN (107 000 kgf)

- Backhoe

Arm crowd force : 951 kN (97 000 kgf)
Bucket digging force : 1 050 kN (107 000 kgf)

Large Bucket-Designed to enhance efficiency.

The large bucket has been shaped specifi cally to enhance scooping and loading operations. Its sharp tilt angle helps boost operating efficiency.

Productivity-Boosting Auto-Leveling Mechanism-One-lever leveling control.

This is another unique Hitachi function developed exclusively for more efficient leveling operations.

Perhitungan Kapasitas Tenaga Engine

Satuan tenaga yang umum digunakan dan sudah kita bahas pada posting sebelumnya, yaitu satuan HP dan PS.
Tenaga (power) = Kerja /satuan waktu
Kerja (work) = Gaya (force) x jarak (distance)

Pada komponen engine, gaya diwakili oleh beban (load), jarak diwakili dengan panjang (radius/ lengan pada dynamo meter, atau jarak titik pusat main journal terhadap titik pusat pin journal crankshaft), kemudian waktu diwakili oleh kecepatan (putaran per menit/ rpm).

Gaya dikali kecepatan pada engine dinyatakan sebagai torsi (torque), sehingga torsi dapat dinyatakan: Torsi = Gaya x Kecepatan
Maka tenaga engine bisa ditulis dengan formula: P = T x S
Dimana,
P = Power (tenaga)
T = Torque (torsi)
S = Speed (rpm)

Jika suatu poros (shaft) berputar satu kali dalam satu menit dapat dinyatakan bahwa poros tersebut berputar 360º/menit. Jika berputar 3/4 putaran dalam satu menit, maka dapat dinyatakan dengan 0,75 put/mnt. atau 270º /mnt.

Dapat dinyatakan dengan: 1 putaran = 360º = 2π radian

Apabila Speed/kecepatan 1 putaran / mnt = 2π x n/mnt............ atau dalam 1 putaran/dtk = 2π x n/60.

1 PS = 75 kgm/dtk
1 HP = 76,04 kgm/dtk

Karena kecepatan putaran engine biasa menggunakan putaran per menit (rpm), maka harus dirubah menjadi putaran per detik, sehingga menjadi:
P = T x S
P = T x 2π x n/mnt, menjadi:
P = T x 2π x n/60 ........ untuk menjadikan dalam satuan kgm/dtk.

Sehingga tenaga dalam satuan HP, didapat formula:
HP = (T x 2π x n)/(60 x 76,04)
HP = (2π : 4662,4) x T x n
HP = 0,001376 x T x n


Dalam satuan PS, didapat formula:
PS = (T x 2π x n)/(60 x 75)
PS = (2π : 4500) x T x n
PS = 0,001396 x T x n

Contoh penggunaan formula, jika diketahui dari grafik performance engine, engine tersebut mempunyai rated power sebesar 320 hp pada 2000 rpm, maka torque rated nya didapat:

HP = 0,001376 x T x n
HP rated = 0,001376 x Torque rated x n
320 = 0,001376 x T x 2000
Torque rated = 320 : ( 0,001376 x 2000)
Torque rated = 116 Kg.m

 

Sistem Engine Control Pada Bulldozer D155-6

Outline of fuel control system

- The following signals are input as rotation command signals to the engine controller.
1) Fuel control dial potentiometer signal
2) Decelerator pedal potentiometer signal
3) 3rd throttle signal (Power train controller)

- The engine controller controls the fuel control system of the engine (CRI system) according to the one of the above input signals which indicates the lowest engine speed.

- Adjust the decelerator pedal speed and high idle speed with the decelerator pedal linkage.

DIAL : Fuel control dial
PEDAL : Decelerator pedal
ROD : Decelerator pedal rod
POTENTIO : Decelerator pedal potentiometer
ENG-ECU : Engine controller
P/T-ECU : Power train controller
ENGINE : Engine unit (CRI devices)
[KOMNET] : KOMNET communication circuit (3rd throttle signal)