Device for indicating the oil level in a combustion engine crankcase
First Claim
1. A device for indicating the oil level in an internal combustion engine crankcase of a motor vehicle, comprising an indicator, a first electrical sensor for detecting fuel level in said vehicle, a second electrical sensor for detecting oil level in said crankcase, an ignition lock switch for said internal combustion engine, the ignition lock switch having at least one position in which the engine ignition is switched on and at least one position in which the engine ignition is switched off, and means responsive to the position of said ignition lock switch to connect said first sensor to said indicator when the ignition lock switch assumes an ignition-on position and to connect said second sensor to said indicator only when the ignition lock switch assumes an ignition-off position, whereby said indicator indicates fuel level when the engine is running and oil level only when the engine is not running.
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Abstract
A device for indicating the oil level of an internal combustion engine crankcase comprises a crankcase oil level sensor electrically connected to a change-over switch provided in the electrical connection between the engine fuel tank level sensor and its fuel indicator, thereby allowing the same in indicator to be used for reading fuel and oil level selectively. The change-over switch preferably forms part of the ignition switch so that oil level reading is prevented when the engine is running.
12 Citations
1 Claim
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1. A device for indicating the oil level in an internal combustion engine crankcase of a motor vehicle, comprising an indicator, a first electrical sensor for detecting fuel level in said vehicle, a second electrical sensor for detecting oil level in said crankcase, an ignition lock switch for said internal combustion engine, the ignition lock switch having at least one position in which the engine ignition is switched on and at least one position in which the engine ignition is switched off, and means responsive to the position of said ignition lock switch to connect said first sensor to said indicator when the ignition lock switch assumes an ignition-on position and to connect said second sensor to said indicator only when the ignition lock switch assumes an ignition-off position, whereby said indicator indicates fuel level when the engine is running and oil level only when the engine is not running.
Specification
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Current AssigneeAB Volvo
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Original AssigneeAB Volvo
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InventorsLundberg, Lars-Erik, Windt, Dag Anders, Olsbo, Ake Gunnar
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Primary Examiner(s)Waring, Alvin H.
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Application NumberUS05/599,730Time in Patent Office652 DaysField of Search340/52 F, 340/59, 340/244 R, 340/244 A, 340/244 B, 116/4, 116/109, 116/118 RUS Class Current340/450.3CPC Class CodesG01F 23/24 by measuring variations of ...
