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CHAPTER ONE
MAIN TECHNICAL SPECIFICATIONS
GENERAL ENGINE SPECIFICATIONS
ENGINE DESIGN
Model | C4121 | C6121 |
Bore | 120.7mm (4.75 in) | 120.7 mm (4.75 in) |
Stroke | 152.4 mm (6.00 in) | 152.4 mm (6.00 in) |
Number of Cylinders | 4 | 6 |
Cylinder Arrangement | * In-line | |
Firing Order (Injection Sequence) | 1, 3, 4, 2 | 1, 5, 3, 6, 2, 4 |
Direction of Rotation (Viewed from Flywheel End) | Counterclockwise | Counterclockwise |
The No. 1 cylinder is opposite the flywheel end.
Exhaust valve
 Inlet valves Schematic diagram of C6121 cylinders and valves |  Inlet valves Schematic diagram of C4121 cylinders and valves |
MAIN ENGINE DATA
Engine Data | Applicable Construction Machinery | |||||
D6D Bulldozer | D7G Bulldozer | 966E loader | 936E loader | 518 Log Skidder | 980S loader | |
Model | C6121ZG01 | C6121ZG02 | C6121ZG03 | C4121ZG01 | C4121ZG02 | C4121ZG03 |
General Assembly No. | 7C0574 | 1W0543 | 9Y1719 | 9Y1721 | 2W3989 | 9Y3134 |
Accessory Assembly No. | 2W0129 | 1W2527 | 6N3056 | 7N7752 | 7C1650 | 9Y3133 |
Engine Test Spec. No. | 0T6394 | 0T4823 | 0T7593 | 0T7595 | 0T3405 | 0T7903 |
Rated Power (kW) | 114 | 160 | 174 | 108 | 104 | 216 |
Rated Speed (r/min) | 1900 | 2000 | 2200 | 2200 | 2200 | 2100 |
Maximum Torque (N.m) | 688 | 919 | 903 | 564 | 547 | 1225 |
Maximum Torque Check Speed (r/min) | 1400 | 1500 | 1400 | 1400 | 1500 | 1200 |
Injection Timing (Before T.D.C) | 21° | 21° | 21° | 21° | 21° | 14° |
Fuel Setting (i.e. Rack Position) at Rated Condition (mm) | -1.40 | 1.10 | 1.35 | 1.15 | 0.80 | 1.87` |
Fuel Setting at Max. Torque (mm) | -0.65 | 2.20 | 1.80 | 1.35 | 1.00 | 3.00 |
Torque Rise (%) | 20.0 | 20.0 | 20.0 | 20.0 | 21.0 | 25.0 |
Maximum o-Load speed (r/min) | 2050 | 2130 | 2360 | 2360 | 2360 | 2320 |
Idle Speed (r/min) | 765 | 750 | 750 | 865 | 725 | 725 |
Maximum Permissible Altitude (m) | 3750 | 2250 | 2400 | 2800 | 3000 | 2000 |
