Testing the condition of a turbocharger

Details Testing the condition of a turbocharger Testing the condition of a turbocharger

1980-10-20

1982-06-15

Myracle, Jerry W.

Measuring and testing

Simulating operating condition

Marine

G01M 1500

Patent

active

043344275

ABSTRACT:
The method of testing the condition of a turbocharger in a turbocharged internal combustion engine by the steps of allowing the engine to decelerate from a high idle speed to a low idle speed, measuring the speed of the turbocharger shaft as the engine decelerates, determining the slope of the D/N vs. N characteristic, where N is the turbocharger shaft speed and D/N is the absolute value of the turbocharger acceleration divided by turbocharger shaft speed, and comparing the computed slope with a predetermined nearly zero slope of a normal turbocharger to see whether the turbocharger is bad due to excessive sliding friction.

REFERENCES:
patent: 4046003 (1977-09-01), Armstrong et al.
patent: 4277830 (1981-07-01), Reid et al.

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