METHOD TO DEVELOP LOAD FOR TEST AND BURN-IN OF COMBINATION UNITS Russian patent published in 2015 - IPC G01M15/08 G01M15/09 

FIELD: engines and pumps.

SUBSTANCE: method to develop load during tests and burn-in consists in the fact that the load is developed by braking torque from internal compression of an ICE with closed inlet and outlet headers. Control of the load at the burn-in stages is done by development of equal specific pressure of compressed air in ICE headers. Pressure is calculated according to the formula $$P_a=0,1\cdot \left(1-\frac{{\Delta }_i}{100}\right)+\frac{{\Delta }_i\cdot P_{z(\partial )}}{100\cdot {\epsilon }^{n_1}},$$ where P_a - pressure of compressed air developed in the inlet and outlet ICE headers, MPa; Δ_i - share of specific compression pressure above the piston from P_z(∂), %; P_z(∂) - actual pressure of the ICE combustion end, MPa; ε - extent of compression. As the ICE is rotated, braking torque is developed on a crank shaft with amplitude-frequency characteristic close to the real operational load.

EFFECT: expanded process capabilities for testing of units for durability, detection of their technical condition after repair under conditions close to real operation conditions.

2 dwg