Of course. Here are the detailed specifications for the ISF 3.8L S5 (Series 5) engine, which is a widely used and respected diesel engine from Cummins.
This engine is known for its reliability, fuel efficiency, and strong performance in light to medium-duty applications like trucks, buses, and industrial machinery.
Cummins ISF3.8L S5 (e.g., Model ISF3.8S5154) Specifications
This information is based on a common rating, the ISF3.8S5154, which produces 154 hp (115 kW). Power ratings can vary slightly depending on the specific application and calibration.
Quick Summary Table
| Feature | Specification |
| Engine Type | In-line 4-cylinder, 4-stroke cycle, water-cooled |
| Displacement | 3.76 liters (229 cubic inches) |
| Aspiration | Turbocharged & Intercooled |
| Fuel System | High-Pressure Common Rail (HPCR) |
| Bore x Stroke | 102 mm x 115 mm |
| Emissions Compliance | China NS V, EU Stage V equivalent |
| Dry Weight (Approx.) | ~ 320 kg (705 lbs) [Varies by configuration] |
Detailed Specifications
1. Power and Torque
Power and torque figures are application-specific. The most common ratings are:
Maximum Power (Common):
154 hp (115 kW) @ 2600 rpm
Other ratings exist, such as 141 hp (105 kW) and 168 hp (125 kW).
Peak Torque (Common):
500 Nm (369 lb-ft) @ 1300-1700 rpm
This wide torque plateau provides excellent drivability and pulling power at low engine speeds.
2. Displacement
3.76 Liters (or 3760 cc)
The "3.8" in the name is a rounded figure for marketing and common reference.
3. Fuel System
High-Pressure Common Rail (HPCR): This is a key feature of modern Cummins engines.
Injection Pressure: Up to 1800 bar (26,000 psi).
Benefits: Allows for multiple injections per cycle, leading to quieter operation, improved fuel economy, lower emissions, and more complete combustion.
4. Weight
The weight is highly dependent on the configuration (with or without accessories like alternator, starter, flywheel housing, etc.).
Dry Weight (Typical): Approximately 320 kg (705 lbs).
Operating Weight: Closer to 350-360 kg (770-795 lbs) when filled with oil and coolant.
5. Key Features and Design
Cylinder Block: Cast iron for durability.
Cylinder Head: Aluminum alloy with integrated intake manifold for weight savings.
Valvetrain: Overhead Camshaft (OHC) design with 4 valves per cylinder (16 valves total) for better breathing and efficiency.
Aftertreatment: To meet stringent Stage V/NS VI emissions standards, the engine is equipped with a full aftertreatment system including:
DOC (Diesel Oxidation Catalyst)
DPF (Diesel Particulate Filter)
SCR (Selective Catalytic Reduction) with Urea (DEF/AdBlue) injection
Oil Change Interval: Typically 20,000 km or 500 hours under normal operating conditions.
Common Applications
You will find the ISF3.8 S5 engine powering a wide range of equipment, particularly in Asia and emerging markets:
Light & Medium-Duty Trucks: (e.g., Foton, JAC, Dongfeng)
Pickup Trucks: (e.g., Foton Tunland)
Buses & Coaches: (Small to medium-sized buses)
Construction Equipment: (e.g., forklifts, generators, compressors)
Agricultural Machinery
Note: Specifications can vary based on the Original Equipment Manufacturer's (OEM) requirements. Always check the specific engine data plate or consult the OEM's documentation for the exact specifications for a particular vehicle or machine.
