Yuchai YCK11: Vietnam National Highway (NGHÉ AN-HÀ NAM) Fuel Efficiency Test - Cases

To validate the real-world operational performance of the Yuchai YCK11 engine, a field test was conducted in strict accordance with the actual operating scenarios of freight operators. The test route was set from Nghệ An Province to Hà Nam City, Vietnam (NGHÉ AN-HÀ NAM). Key test parameters include: the entire journey was conducted on national highways, with a one-way distance of 311 kilometers, covering plain terrain, gentle slopes, and urban traffic sections. This test setup is consistent with the daily operational requirements of freight users and enables a comprehensive assessment of the engine's overall performance under real-world working conditions.

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The test was conducted using the FAW Jiefang CA4250P25K15 heavy-duty truck as the unified platform, with a full load of 40 tons. The entire test process simulated real freight operations without any special optimization. Throughout the test period, the vehicle operated back and forth along the national highway between Nghệ An Province and Hà Nam City, maintaining a normal operating speed of 40-80 km/h to ensure the authenticity, validity, and high referential value of the test data. A competing engine (CA6DM2) was selected for benchmarking, and the core operational performance of the two engines was fully evaluated under identical route, load, and driving conditions.

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Following a period of continuous field testing, the cumulative operating mileage of the two test vehicles showed a gradual gap, and the core operational data was systematically documented. A detailed performance comparison is presented in the table below:

Engine Model	yCK11	CA6DM2
Vehicle Brand	FAW Jiefang	FAW Jiefang
Vehicle Model	CA4250P25K15T1E5A80	CA4250P25K15T1E5A80
Power (PS)	460	460
Transmission Brand	Fast Gear C12JSQXL220T	FAW CA12TAX230
Final Drive Ratio	3.7	3.769
Load Capacity (T)	40	40
Test Route	Vietnam National Highway (Nghệ An Province - Hà Nam City), 311km one-way	Vietnam National Highway (Nghệ An Province - Hà Nam City), 311km one-way
Normal Speed (km/h)	40-80	48-80
Combined Fuel Consumption (L/100km)	30	32
Cumulative Operating Mileage (km)	6367	4865

Low fuel consumption

The fuel consumption performance of the Yuchai YCK11 is clearly demonstrated by the field test data from the NGHÉ AN-HÀ NAM national highway: its combined fuel consumption is only 30L per 100 kilometers. Compared to the competing CA6DM2 engine (32L/100km), it saves approximately 2L of fuel per 100 kilometers at the same horsepower, showcasing excellent fuel efficiency. Based on the cumulative operating mileage of 6367km displayed in the table, it is evident that the Yuchai YCK11 can complete more transportation tasks within the same operational cycle. When combined with its superior fuel-saving feature, it delivers greater operational value for users and fully reflects its practicality in real-world applications.

High horsepower,Fast acceleration response

Both engines deliver 460PS of power, ensuring robust performance. Equipped with a 3.7 final drive ratio, the Yuchai YCK11 offers quicker acceleration response when climbing gentle slopes and overtaking in urban sections of the NGHÉ AN-HÀ NAM national highway, fully embodying its fast acceleration advantage.

High reliability

From the perspective of overall vehicle performance during the field test, the truck equipped with the Yuchai YCK11 proves to be reliable, durable, and practical. Its cumulative operating mileage of 6367km is significantly higher than the 4865km of the competing CA6DM2 engine. This gap stems from the Yuchai YCK11's lower failure rate, which confirms the stable quality of Yuchai engines and ensures high vehicle availability-providing reliable transportation support for users who rely on this route for their freight operations.

Low noise

The Yuchai YCK11 effectively reduces operational noise through optimized engine structure design, fully reflecting its low-noise advantage. This enhances driving comfort for drivers traveling long distances on the NGHÉ AN-HÀ NAM national highway and further improves driving safety. Additionally, Yuchai provides timely after-sales service, offering solid support for users' long-term operation and further highlighting the practical value of the entire vehicle.

Based on the field test data and real-world application scenarios, the Yuchai YCK11 engine fully meets the core needs of users. Operating on the NGHÉ AN-HÀ NAM route (entirely on national highways, 311km one-way), it achieves a combined fuel consumption of 30L/100km, saving approximately 2L of fuel per 100 kilometers compared with competing engines of the same horsepower. The entire vehicle is reliable, durable, and practical, while the engine excels in fuel efficiency, strong power, low noise, and fast acceleration. Combined with Yuchai's stable product quality and timely after-sales service, the Yuchai YCK11 engine is well-suited for freight operations on the NGHÉ AN-HÀ NAM national highway, providing an efficient, economical, and reliable power solution for more freight users operating on this route and similar national highway trunk lines.