Subaru Robin Power Products R1300 manual Oil

[Judgement of oil level]

When sufficient oilis in the crankcase, bothof inner and outer electrodes are immersed in the oil through

whichcurrentflowsacrosstheelectrodes.Thesensorjudgesthatoil in the crankcase is sufficient. 4 When oil level goes down and the inner electrode is exposed to the air due to consumption of oil, no current flow between the electrodes as isairconsidered to be electrically non-conductive.

The sensor in this case judges that oilis insufficient.

[Decision of oil shortage]

Oil level at the electrodesmay go down momentarily probably due to the engine being slantedor affected by vibration even if a sufficient oil isin the crankcase.

For that reason, the sensor has an electronic timer circuit to prevent it from interpreting as short of oil when amount of oil is sufficient. The sensor has been designed so that the engine is to be stopped only when oil-shortage is detected for 5 seconds uninterrupted.

The timer employs an integration circuitand it is to be reset when the inner electrode is soaked in the oil again before the sensor decidesit as oil-shortage.

The oillevelwhere the sensordecides as oil-shortage, when oil level goesdowngradually, is called “threshold level”.

[Automatic stopof engine]

When the sensor decides as oil-shortage, it makes the engine tostop running automatically for protection of engine.

Once the stopping circuit is activated, it keeps functioning until it confirms that the engine has made a

complete stop, thenthe circuit stops functioning automatically.	e
5-5-4BLOCK DIAGRAM OFTHE CIRCUIT

		Power circuit	Igniter
			LED indicator
Innerpole -	Detection	- Deley circuit	Stopping
	circuit		circuit
oil I
Outer pole			Engine
		Fig. 5-1 1
0Power circuit ---- * - *This---- rectifies a part of power to the igniter			and regulates it to supply the -1
	stabilized power to necessary circuits.

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