6CTAA8.3-G155

The compact, lightweight, and cost-effective Type B engine delivers cleaner and quieter performance, with a rated power output of 130kW. Under strict adherence to maintenance guidelines, it achieves a mean time between failures (MTBF) of 1,500 hours and a mean time between overhauls (TBO) of 6,000 hours or more. Even under extreme duty cycle testing, this model maintains strong performance. Its low noise levels, reduced weight, and high power-to-weight ratio are all attributable to its world-class reliability.

Basic Engine Specifications

• Model: HWCCTAA8.3‑G155
• Speed: 1500 RPM & 1800 RPM
• Issue Date: 2024‑03‑26
• Compression Ratio: 11.5:1
• Bore: 114 mm
• Stroke: 135 mm
• Speed Regulation: ≤3%
• Aspiration: Turbocharged & Air‑to‑Air Intercooled
• Displacement: 8.3 L
• No. of Cylinders: 6

Test Conditions

Engine tested with water pump and oil pump; without air compressor, generator, fan, optional parts and drives.

Intake restriction: 3.7 kPa; Exhaust back pressure: 10 kPa.

Rated Power Data

Performance Data at 1500 rpm

Performance Data at 1800 rpm

General Notes

Performance data obtained under GB/T 18297 test conditions: ambient pressure 100 kPa, intake air temperature 25 °C.

Maximum continuous operating altitude: 2200 m.

Typical Engine Data

• Dry Weight: 684 kg
• Moment of Inertia (rotating parts, no flywheel): 0.37 kg·m²
• Distance from CG to front face of cylinder block: 541 mm
• Distance from CG to crankshaft centerline (above): 163 mm
• Firing Order: 1‑5‑3‑6‑2‑4

Engine Mounting

• Maximum allowable static bending moment (rear face): 1356 N·m

Exhaust System

• Maximum exhaust back pressure: 10 kPa

Charge Air Cooling System

• Max allowed temperature difference (manifold vs ambient): 25 °C
• Max pressure drop across intercooler: 13 kPa
• Max intake manifold temperature (25 °C ambient): 50 °C
• Max intake manifold temperature: 58 °C

Air Intake System

• Max allowable intake restriction (heavy‑duty air cleaner):
  • Clean element: 3.7 kPa
  • Dirty element: 6 kPa
• Minimum dirt holding capacity: 53 g/litre/sec
• Max temperature rise to turbo inlet: 17 °C
• Recommended minimum intake ID: 76 mm

Lubrication System

• Normal oil pressure:
  • Low idle: 207 kPa
  • Rated speed: 345 kPa
• Oil capacity (offset pan): max 14.2 L, min 12.3 L
• Max oil sump temperature: 121 °C
• Minimum system capacity (sump + filter): 23.8 L
• Inclination limits (offset pan): front up 4°, others 0°

Cooling System

• Coolant capacity (engine only): 12.3 L
• Max external circuit resistance:
  • 1800 rpm: 35 kPa
  • 1500 rpm: 28 kPa
• Max static coolant height above crankshaft: 1.4 m
• Thermostat range: 82–95 °C
• Minimum pressure cap: 69 kPa
• Max coolant temp: standby 104 °C, prime 100 °C

Electrical System

• Starting motor: 12V / 24V
• Battery charging (negative ground): 12V 63A; 24V 40A
• Max starting circuit resistance: 12V 0.00075 Ω; 24V 0.002 Ω
• Min battery CCA (@‑12 °C): 12V 800; 24V 400

Emission Data (GB 20891‑2007)

At 1500 rpm

• NOₓ: 9.2 g/kW·h
• HC: 1.3 g/kW·h
• CO: 5.0 g/kW·h
• Particulate: 0.70 g/kW·h

At 1800 rpm

• NOₓ: 9.2 g/kW·h
• HC: 1.3 g/kW·h
• CO: 5.0 g/kW·h
• Particulate: 0.54 g/kW·h

Thermal & Flow Performance

Item	Unit	1800 rpm Standby	1500 rpm Standby	1800 rpm Rated	1500 rpm Rated
Engine Speed	rpm	1800	1500	1800	1500
Low Idle Speed	rpm	750–850	750–850	750–850	750–850
Output Power	kW	168	155	130	120
Piston Speed	m/s	8.1	6.8	8.1	6.8
Friction Loss	kW	22	17	22	17
Coolant Flow	L/sec	4.0	3.3	4.0	3.3
Intake Flow	L/sec	262	191	254	183
Exhaust Flow	L/sec	755	547	675	480
Exhaust Temperature	°C	570	540	540	500
Air/Fuel Ratio	air:fuel	12:1	12:1	12:1	12:1
Ambient Heat Loss	kW	33	26	29	24
Coolant Heat Loss	kW	95	87	91	83
Exhaust Heat Loss	kW	152	143	116	104