Yuchai YC4D120-21: Sand/Gravel Yard – Stockyard Fuel Efficiency Test - Cases

To verify the real-world performance of the Yuchai YC4D120-21 engine, an on-road operation test was conducted under actual working conditions for sand and aggregate transportation.

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The test route runs between sand/gravel yards and stockyards, covering mainly dirt roads and simple gravel roads with a round-trip distance of approximately 100 km. This test fully reflects the daily operating scenarios of local transport users.

The test vehicle is a FORLAND dump truck model BJ3183DKPEA-FA equipped with the Yuchai YC4D120-21 engine, with a rated load of 16 tons. The vehicle's normal operating speed ranges from 60 to 80 km/h.

The key performance data of the engine is listed in the table below:

Engine Model	YC4D120-21	ISF2.8s5129T
Vehicle Brand	FORLAND	FORLAND
Vehicle Model	BJ3183DKPEA-FA	BJ3183DKPEA-FA
Power (PS)	120	129
Transmission Brand	10H46	8JS85F
Final drive ratio	6.833	6.33
Payload (T)	16	18
Operation Mileage (km)	12540	14036
Road Condition	Dirt roads & gravel roads	Dirt roads & gravel roads
Test Route	Sand/gravel yard – Stockyard, ~100 km round-trip	Sand/gravel yard – Stockyard, ~100 km round-trip
Normal Speed (km/h)	60-80	60-80
Combined Fuel Consumption (L/100km)	16.2	17.6

Outstanding Fuel Economy

Test data shows that under real operating conditions, the Yuchai YC4D120-21 engine achieves a combined fuel consumption of 16.2 L/100km, delivering a clear fuel-saving advantage over the competitive model ISF2.8s5129T (17.6 L/100km). It effectively reduces operating costs and improves economic efficiency for transport operators.

Strong Power and High Transport Efficiency

With a rated power of 120 PS, the Yuchai YC4D120-21 provides stable and sufficient power output. Driver feedback confirms strong power performance and responsive acceleration, which effectively improves vehicle dynamics and transport efficiency.

High Reliability & Stable Performance

The test vehicle equipped with Yuchai YC4D120-21 has accumulated an operating mileage of 12,540 km. User feedback shows that the engine features low failure rate and high availability, with stable and reliable performance under real working conditions.

Stable Quality & Responsive After-Sales Service

Yuchai provides consistent product quality and responsive after-sales support, offering a strong guarantee for customers' daily operation and management.

Based on real-road test data and user feedback from sand and aggregate transportation, the Yuchai YC4D120-21 engine demonstrates outstanding advantages in fuel economy, power, reliability and durability.It is a highly economical, efficient and reliable power solution for short-haul construction material transportation.

For more information about Yuchai power solutions for commercial vehicles, please contact our local sales and service team.