Matching Test of DLE200 & WF-EN-55 Engines Successfully Completed on Professional Test Bench

DLE200 & WF-EN-55 Engine Matching Test – Precision Validation for Reliable Flight Power

To further validate the integration performance and operational reliability of high-power UAV and paramotor engines, WING FLYING (TIANJIN) TECHNOLOGY CO., LTD. recently conducted a comprehensive matching test of the DLE200 two-stroke engine on the WF-EN-55 UAV engine test bench.

This test systematically evaluated the compatibility, output performance, thermal stability, fuel efficiency, vibration behavior, and electrical system reliability of the power unit under controlled laboratory conditions, providing authoritative data support for paramotor and light aircraft power system development, verification, and delivery.

Project Background

The DLE200 engine is widely recognized in the paramotor and light glider sector as a mainstream high-power two-stroke solution. In this test, the engine was mounted on the WF-EN-55 professional UAV engine test bench and equipped with a 50-inch propeller to simulate real operating conditions.

FIG 1-2 DLE200 Installed on WF-EN-55 UAV Engine Test Bench

The objective was not only to measure peak performance but also to validate long-term operational stability, transient response, and structural safety under simulated flight loads.

Test Parameters for DLE200cc Engine (Paramotor / Glider Application)

To ensure the data fully meets engineering and mass production requirements, the following key parameters were tested and recorded:

1. Performance Parameters

• Maximum power and maximum torque (at corresponding RPM)

• Power and torque curves under different throttle positions

• Rated operating RPM range

• Static thrust measurement

These indicators directly determine climb capability, cruising efficiency, and load-carrying performance for paramotor and UAV platforms.

2. Fuel and Lubrication System Evaluation

• Fuel consumption rate under various load conditions

• Optimal fuel-oil mixture ratio verification

• Lubrication system reliability during continuous operation

Accurate fuel mapping ensures both efficiency and engine longevity, especially for extended flight missions.

3. Temperature and Heat Dissipation Monitoring

• Cylinder Head Temperature (CHT)

• Exhaust Gas Temperature (EGT)

• Continuous operating temperature rise curve

Thermal stability is critical for two-stroke engines. Continuous data logging allows engineers to assess safe operating envelopes and cooling system effectiveness.

4. Starting and Electrical System Testing

• Cold start and hot start success rate

• Starting current and operating voltage

• Generator output power

The integrated electrical control box measures voltage, current, starting performance, and idle stability in real time, ensuring dependable field operation.

5. Vibration and Reliability Assessment

• Engine vibration levels under different RPM ranges

• Continuous running durability test

• Gearbox temperature, wear condition, and abnormal noise detection

Vibration data is particularly important for UAV and paramotor applications, where frame resonance and pilot comfort must be carefully controlled.

6. Exhaust and Safety Performance

• Exhaust back pressure

• Idle stability

• Rapid acceleration and deceleration response

Transient response performance determines throttle sensitivity and operational safety during flight maneuvers.

7. Installation and Compatibility Verification

• Net weight and mounting dimensions

• Force at damping mounting points

• Compatibility with frame structure, propeller, and fuel tank

Structural compatibility testing ensures that the engine and test bench interface safely and efficiently, minimizing integration risks during mass production.

Test Bench Capabilities and Objectives

DLE200 & WF-EN-55 Engines Matching Test – Professional Power System Evaluation

The WF-EN-55 engine test bench is designed as a comprehensive validation platform capable of performing:

• Structural compatibility and safety verification

• Power, torque, RPM, static thrust, and fuel consumption testing

• CHT, EGT, oil temperature, and vibration stability monitoring

• Startability, idle speed, and transient response evaluation

• Electrical system diagnostics

All data is processed through the Met-engine software system, which can instantly generate CSV data files, professional PDF reports, and side-by-side performance comparison charts without additional processing.

This integrated solution significantly improves testing efficiency and shortens product development cycles for engine manufacturers and UAV integrators.

Practical Value for UAV and Paramotor Manufacturers

For drone developers, paramotor manufacturers, and light aircraft integrators, accurate engine matching data is essential for:

• Optimizing propulsion system configuration

• Improving structural durability

• Ensuring long-term operational stability

• Reducing field failure risks

• Supporting certification and batch delivery

Through standardized testing procedures and real-time data acquisition, this matching test provides reliable engineering references for future product upgrades and production deployment.

Conclusion

The successful completion of the DLE200 and WF-EN-55 matching test demonstrates the robustness, stability, and analytical capability of the WF-EN-55 professional UAV engine test bench. By delivering precise performance metrics, thermal data, vibration analysis, and electrical diagnostics, the system ensures that engines operate safely, reliably, and efficiently before entering mass production or field deployment.

If you would like to learn more about our engine testing solutions, please feel free to contact us:

Sandy Han
WING FLYING (TIANJIN) TECHNOLOGY CO., LTD.
E-mail: sandy@wing-flying.com
Cell phone & WhatsApp: 0086 13042251024
Address: 7th Floor, B2#, Animation Building, Sino-Singapore Tianjin ECO-CITY, China

Thank you for your attention.