Press release
Yuchai YCK08-60 vs YCK09-60: Deep Technical Comparison with Global Heavy-Duty Engines
Among its newest generation of China VI-compliant engines, the YCK08-60 [https://www.nzhengine.com/yuchai-yck09-60-diesel-engine-400hp-1700n-m-china-vi-dump-trucks-product/] and YCK09-60 [https://www.nzhengine.com/yuchai-yck08-60-8l-diesel-engine-350-hp-china-vi-euro-vi-level-excellent-fuel-economy-product/] stand out as flagship models designed for trucks, buses, and construction machinery.This article provides an in-depth, factual comparison between these two engines and benchmarks them against other global heavyweights such as Cummins, Weichai, and Mercedes-Benz.
1.Core Design Comparison
Technical Item
Yuchai YCK08-60
Yuchai YCK09-60
Displacement
7.8L
8.9L
Cylinder Block Material
High-strength cast iron
High-toughness alloy cast iron
Bore times Stroke
110mm times 135mm
115mm times 145mm
Compression Ratio
17.5:1
18.0:1
Turbocharging System
Single-stage turbo + intercooler
Two-stage variable turbo + high-efficiency intercooler
Fuel Injection System
BOSCH Common Rail 1800 bar
BOSCH Common Rail 2000 bar
Control System
Yuchai i-HEC
Yuchai i-HEC+ Smart Combustion Control
2.Power and Fuel Efficiency Comparison
Specification
YCK08-60
YCK09-60
Cummins ISL9
Weichai WP10H
Mercedes OM470
Max Power
350 HP
400 HP
380-400 HP
375-430 HP
400 HP
Max Torque
1550 Nm
1800 Nm
1700 Nm
1750 Nm
1900 Nm
Fuel Consumption
185 g/kWh
178 g/kWh
182 g/kWh
185 g/kWh
180 g/kWh
Noise Level
Low
Low
Medium
Medium
Low
Technical Insight:
YCK08-60 prioritizes fuel economy and long-distance stability, ideal for logistics fleets.
YCK09-60 improves combustion efficiency by 4% over YCK08-60, becoming one of Yuchai's earliest engines to meet the China VI B emission standard.
Compared with Cummins ISL9, YCK09-60 achieves similar power with lower operational fuel cost.
Mercedes OM470 offers premium smoothness, but its purchase and service costs are considerably higher.
3.Maintenance and Durability
Aspect
YCK08-60
YCK09-60
Cummins ISL9
Weichai WP10H
Overhaul Interval
greater than or equal to 1.0 million km
greater than or equal to 1.2 million km
1.0 million km
0.9 million km
Parts Compatibility
High
High
Medium
High
Maintenance Cost
Low
Low
Medium
Moderate
After-Sales Support
Global + localized
Global + localized
Global
Mainly domestic
Conclusion:
Both YCK engines excel in low maintenance costs and high parts compatibility, thanks to Yuchai's modular design.
The YCK09-60 reduces service time by 15% compared with older models - a major advantage for overseas users managing their own fleets.
4. Emission and Environmental Technology
Both YCK engines comply with China VI / Euro VI emission standards using:
*
* EGR + DOC + DPF + SCR four-in-one system
* Closed-loop fuel injection monitoring
* Yuchai i-HEC intelligent combustion algorithm
While brands like Cummins and Mercedes-Benz rely on imported post-treatment modules (increasing cost and complexity), Yuchai integrates a domestically optimized system that balances reliability with affordability.
Application
Recommended Model
Key Advantages
Highway Transport
YCK09-60
High torque and acceleration for long hauls
City Bus / Passenger Coach
YCK08-60
Quiet, fuel-efficient operation
Construction & Mining Equipment
YCK09-60
Enhanced durability and dust/vibration protection
Tractor & Heavy Logistics
YCK09-60
Strong continuous output and fuel savings
Image: https://ecdn6.globalso.com/upload/p/3677/image_other/2025-10/2.jpg
YCK08-60
Image: https://ecdn6.globalso.com/upload/p/3677/image_other/2025-10/1.jpg
YCK09-60
Evaluation Area
Yuchai YCK09-60
Cummins ISL9
Mercedes OM470
Weichai WP10H
Power & Torque
Fuel Economy
Maintenance Cost
Global Support
Value for Money
Verdict:
Yuchai's YCK09-60 represents a breakthrough for Chinese heavy-duty diesel engines - combining world-class emission compliance, exceptional fuel economy, and cost efficiency that rivals leading global brands.
Conclusion
Through years of research, testing, and production refinement, Yuchai's YCK08-60 [https://www.nzhengine.com/yuchai-yck09-60-diesel-engine-400hp-1700n-m-china-vi-dump-trucks-product/] and YCK09-60 [https://www.nzhengine.com/yuchai-yck08-60-8l-diesel-engine-350-hp-china-vi-euro-vi-level-excellent-fuel-economy-product/] have become flagship models symbolizing the next generation of efficient, durable, and eco-friendly diesel engines.
Whether in domestic fleets or international operations, these engines deliver the balance of power, precision, and reliability that defines Yuchai's global reputation.
Yuchai - Powering the Future with Efficiency, Strength, and Reliability.
Media Contact
Company Name: Nanning Nazhihui Import & Export Trade Co., Ltd.
Email:Send Email [https://www.abnewswire.com/email_contact_us.php?pr=yuchai-yck0860-vs-yck0960-deep-technical-comparison-with-global-heavyduty-engines]
Country: China
Website: https://www.nzhengine.com/
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