Details
Dongfeng Cummins ISDe285-30 Complete Engine Assembly
The Cummins ISDe285-30 engine represents the highest power tier within the Dongfeng Cummins (DCEC) 6.7-liter commercial vehicle engine family. Delivering 210kW of rated power at 2500 RPM and an impressive 970 Nm of peak torque, this 285HP Cummins diesel engine is engineered specifically for heavy-duty trucks, 10-to-12-meter passenger buses, and specialized commercial vehicles operating in demanding environments. As a premier DCEC Cummins ISDe285-30 engine supplier, HekoPower provides this complete engine assembly to global fleet operators and OEM chassis builders who require uncompromised pulling power combined with Euro III emissions compliance.
Unlike mechanical legacy engines, the ISDe285 automotive engine relies on full-authority electronic controls. This genuine Cummins ISDe285-30 automotive diesel engine integrates advanced diagnostics and precise fuel mapping directly into the Engine Control Module (ECM). This ensures that commercial fleets achieve excellent fuel economy without sacrificing the low-end torque required for steep gradients and heavy cargo loads. The ISDe285-30 engine assembly arrives fully dressed, providing a drop-in replacement engine for trucks that minimizes vehicle downtime and restores factory-level reliability.
Tech Specs of ISDe285-30
General Engine Data
Engine Model: Cummins ISDe285-30
Type: 4 Cylinders in Line
Displacement: 6.7 L
Bore * Stroke: 107 * 124
Net Weight (with flywheel & alternator): 509 Kg
Overall Dimension: 901mm*723mm*815mm
Key Performance Data
Rated Power: 210 kW/285 HP
Rated Speed: 2500 rpm
Idle Speed: 600-800 rpm
Fuel Consumption @ Rated Power: 195 g/Kw.h
Max Continuous Running Altitude: 3000 m
Max. Torque/Speed: 970 N.m @ 1200-1700 rpm
Max. No-load Governed Speed: 2850 rpm
More Technical Data
Certification: Euro III/IV
Aspiration: Turbocharged & Charge Air Cooled
Fuel System: Bosch Direct Injection (HPCR)
Compression Radio: 17.3:1
Starting System: Electrical Starting Motor 24V(750A)
Lowest Starting Temp Without auxiliary system: -12℃/-25℃
Cooling Method: Water cooled
Engine Cooling Fluid Volume: 9.4 L
Core Engineering and the Bosch HPCR Fuel System
At the heart of the 6.7L Cummins ISDe285-30 is the Bosch High-Pressure Common Rail (HPCR) fuel system. This system is a significant upgrade over traditional rotary fuel pumps. By maintaining exceptionally high fuel pressure independent of engine speed, the Bosch HPCR system ensures optimal atomization of the diesel fuel inside the combustion chamber. This translates directly to improved cold-start performance, reduced engine noise, and strict adherence to Euro III emissions standards.
The engine block features a 6-cylinder in-line configuration with a bore and stroke of 107mm by 124mm. Cummins designed this block to integrate fluid lines internally, replacing vulnerable external hoses and eliminating potential leak points. The turbocharged intercooler aspiration method further condenses the intake air, packing more oxygen into the cylinders to maximize the combustion efficiency of every fuel drop. With a calculated compression ratio tailored for heavy-duty cycles and a high-capacity coolant system, the ISDe285-30 maintains stable operating temperatures even when pulling maximum loads at 1400 RPM where peak torque is achieved.
Technical Performance Comparisons
Understanding how the Cummins ISDe285-30 compares to other motors in the DCEC lineup is critical for fleet managers determining the exact power requirements for their chassis.
ISDe285-30 vs ISDe270-30 and ISDe245-30
While the ISDe245, ISDe270, and ISDe285 all share the same 6.7L structural block and Euro III emission profile, their software calibrations, turbocharger mappings, and internal component stresses differ significantly. The ISDe245-30 produces 180kW and 925 Nm of torque, making it suitable for lighter regional distribution trucks. The ISDe270-30 steps up to 198kW and shares the 970 Nm torque rating of the 285HP model. However, the ISDe285-30 pushes the 6.7L platform to its maximum Euro III potential, delivering a full 210kW of rated power. This extra horsepower provides the crucial top-end highway speed maintenance required for intercity coaches and long-haul transport.
ISDe285-30 210kW vs 285HP
A common area of confusion during engine procurement is the terminology regarding power output. The ISDe285-30 210kW and the ISDe285-30 285HP are the exact same engine. The difference is merely a unit conversion between metric kilowatts and imperial horsepower. When assessing the ISDe285-30 6.7L 285HP specifications, fleet operators can rely on the 210kW rating as the definitive metric for matching the engine to the appropriate transmission input shaft limits.
DCEC ISDe285-30 vs ISLe290
Fleet operators frequently weigh the ISDe285-30 against the ISLe290 when repowering heavy commercial vehicles. The fundamental difference lies in engine displacement and physical weight. The ISDe285-30 is a 6.7-liter engine producing 970 Nm of torque, offering an exceptional power-to-weight ratio for medium-heavy applications. In contrast, the ISLe290 is an 8.9-liter engine that generates 1050 Nm of torque. The ISLe290 is significantly heavier and physically larger, making it strictly suited for extreme heavy-duty construction vehicles. The ISDe285-30 remains the superior choice for operators needing high horsepower in a tighter, lighter chassis footprint.
Cummins ISDe285-30 vs ISDe285-50
When comparing the ISDe285-30 to the ISDe285-50, the distinction entirely revolves around emissions regulations. Both produce 285 horsepower. The ISDe285-30 30 vs 40 vs 50 suffix denotes the emission tier. The -30 model is a Euro III engine that relies primarily on the HPCR system and internal combustion optimization to meet standards without complex exhaust aftertreatment. The ISDe285-50 is a Euro V engine that requires a Selective Catalytic Reduction (SCR) system and diesel exhaust fluid (AdBlue) to operate. For export markets with less stringent environmental regulations or varying diesel fuel quality, the ISDe285-30 remains the preferred, highly reliable option.
Real Application Scenarios for Trucks and Buses
The Cummins ISDe285-30 truck engine is the backbone of many regional logistics networks. It is frequently mated to Dongfeng heavy-duty truck chassis, serving as the primary powertrain for 6x4 and 8x4 cargo trucks. In these applications, the 970 Nm of torque allows the vehicle to navigate steep mountain passes fully loaded without excessive downshifting.
Beyond freight, the ISDe285-30 engine for passenger buses is a staple in the intercity transport sector. 10-meter to 12-meter touring coaches rely on the smooth operation and reduced vibration of the 6-cylinder Cummins ISDe engine to ensure passenger comfort. The electronic controls and integrated waste-gated turbocharger deliver rapid throttle response, allowing heavy buses to merge safely onto highways while maintaining strict fuel economy targets.
Maintenance, Troubleshooting, and Replacement Tips
Maintaining a 6.7L Cummins engine for a truck requires strict adherence to fluid schedules, particularly concerning the fuel system. The Bosch HPCR system operates at extreme pressures and relies on the diesel fuel itself for lubrication. A common misconception is that Euro III engines can tolerate heavily contaminated diesel. In reality, failing to drain the water separator daily or delaying fuel filter replacements will rapidly destroy the common rail injectors, leading to costly downtime.
When conducting an ISDe285-30 replacement engine for truck installations, always ensure the Engine Control Module (ECM) is properly flashed to match your specific vehicle's CAN bus system. Installing a bus engine ECM into a heavy truck chassis can lead to incorrect throttle mapping and transmission shifting errors.
Furthermore, during engine overhauls or wholesale replacement, technicians must carefully verify the engine dimensions and weight limits of the existing engine mounts. The ISDe285-30 wet weight requires heavy-duty mounts; using worn vibration isolators will transmit excessive harshness into the cabin and eventually cause stress fractures in the chassis.
Expanding Your Options Within the Dongfeng Cummins Ecosystem
Selecting the precise engine variant is only the first step in optimizing your commercial fleet. Whether you are replacing a single damaged motor or sourcing powerplants for a newly designed vehicle chassis, evaluating the broader engine family ensures you match the correct torque curve to your transmission. For operators looking to explore other power tiers or different emission standards within this exact physical footprint, there are several related models to consider.
DCEC ISDe Series, original products from Dongfeng Cummins Engine Plant (DCEC), Cummins Joint Venture Plant since 1986, 50% shareholding by Cummins USA. This series mainly includes ISDe140-30, ISDe140-40, ISDe160-30, ISDe160-40, ISDe180-30, ISDe180-40, ISDe185-30, ISDe185-40, ISDe200-30, ISDe210-30, ISDe210-40, ISDe230-30, ISDe245-30, ISDe270-30, ISDe285-30, ISDe300-40.
Frequently Asked Questions (FAQ)
What is the standard ISDe285-30 engine lead time for wholesale orders?
As a dedicated Cummins ISDe285-30 engine assembly supplier, HekoPower typically fulfills wholesale orders within standard industrial lead times. Exact timelines depend on current factory output and port logistics, but we prioritize rapid dispatch to minimize your fleet downtime.
Is this an original DCEC ISDe285-30 engine?
Yes. Every ISDe285-30 diesel engine wholesale unit supplied by HekoPower is a genuine Dongfeng Cummins (DCEC) product. We do not deal in rebuilt aftermarket clones. You receive factory-level reliability and authentic Bosch HPCR fuel system Cummins ISDe285-30 parts.
Can I manually tune the ISDe285-30 for more power?
A prevalent misconception is that electronic Cummins engines can simply be "chipped" for endless power. The ISDe285-30 is already at the maximum safe power limit for the 6.7L Euro III platform. Attempting to push past 285HP via aftermarket software will exceed the thermal limits of the pistons and drastically reduce the lifespan of the turbocharged intercooler system.
How do I get an accurate ISDe285-30 engine price?
Prices fluctuate based on global material costs, exact configuration requirements, and order volume. Please contact the HekoPower engineering sales team with your exact chassis details to receive a precise quote for a complete engine assembly or a Cummins ISDe285-30 long block assembly.
