The Cummins QSB4.5 is a 4.5L inline-4 diesel engine designed for medium-duty buses and commercial vehicles. Featuring turbocharged and aftercooled configuration with high-pressure common rail fuel system, it delivers 130-205 hp and 450-700 Nm torque. Compatible with city buses, coaches, and specialty vehicles, this versatile engine offers fuel efficiency, low emissions, and reliable performance for urban transit and regional transport.
Technical Features:
Type: Inline-4 Diesel Engine
Power Output: 97-153 kW (130-205 HP) @ 2200-2500 RPM
Torque: 450-700 Nm @ 1200-1600 RPM
Engine Parameters:
Displacement: 4.5 L (4,461 cc)
Bore × Stroke: 107 mm × 124 mm
Fuel System: High-Pressure Common Rail (HPCR)
Configuration: Turbocharged & Aftercooled
Compression Ratio: 17.3:1
Emission Standard: Tier 3 / Stage IIIA / Euro III
Weight: ~340 kg
Cooling: Water-Cooled
Suitable Models:
City Buses & Coaches
School Buses
Mining & Construction Equipment
Generator Sets & Industrial Applications