Oil level indicator for a screw-type compressor
First Claim
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1. A device for monitoring and/or displaying an oil level in a screw-type compressor integrated into a vehicle, the device comprising:
- an optical unit that monitors an oil level of an oil sump of the screw-type compressor; and
an evaluation device, connected to an engine controller of the vehicle, that evaluates signals from the optical unit indicating the oil level of the screw-type compressor, signals related to an operating state of the screw-type compressor and receives signals relating to an operating state of the vehicle from the engine controller into which the screw-type compressor is integrated, the operating state of the vehicle being one of accelerating and braking,wherein the oil level fluctuates in the oil sump of the screw-type compressor during different operating states of the screw-type compressor and different operating states of the vehicle, andwherein the evaluation device evaluates the operating state of the vehicle together with the operating state of the screw-type compressor when determining the oil level in the screw-type compressor dependent on the operating states.
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Abstract
A device for monitoring and/or indicating an oil level in an oil sump of a screw-type compressor, the oil level fluctuating in different operating states of the screw-type compressor. A device for monitoring and indicating the oil level in a screw-type compressor, the reliability thereof being improved over the prior art and erroneous measurements being excluded. The device is an optical unit which has no mechanically moving parts that can become damaged during the often rough use of the device.
27 Citations
8 Claims
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1. A device for monitoring and/or displaying an oil level in a screw-type compressor integrated into a vehicle, the device comprising:
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an optical unit that monitors an oil level of an oil sump of the screw-type compressor; and an evaluation device, connected to an engine controller of the vehicle, that evaluates signals from the optical unit indicating the oil level of the screw-type compressor, signals related to an operating state of the screw-type compressor and receives signals relating to an operating state of the vehicle from the engine controller into which the screw-type compressor is integrated, the operating state of the vehicle being one of accelerating and braking, wherein the oil level fluctuates in the oil sump of the screw-type compressor during different operating states of the screw-type compressor and different operating states of the vehicle, and wherein the evaluation device evaluates the operating state of the vehicle together with the operating state of the screw-type compressor when determining the oil level in the screw-type compressor dependent on the operating states. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification