Low Oil Pressure shut off switch
01-13-2011, 09:15 AM
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Low Oil Pressure shut off switch
Given I'm not a full time race driver I didn't know about this device but it sounds like a great idea even for DD:
http://www.hrpworld.com/index.cfm?tpc=Low_...&action=product
Basically it shuts off your fuel pump or ignition if your oil pressure drops below 12psi, which is about 0.8 Bar. Normal s2000 idle oil pressure is around 1.3 Bar.
It doesn't say how it works on the description, but I assume it keeps its two poles connected and disconnects them below 12psi, much like a normally closed push button that disconnects when you push it.
Has anybody used this in their car before? Any input? Im strongly thinking of getting this although I have a oil pressure gauge but this extra line of protection sounds good too.
http://www.hrpworld.com/index.cfm?tpc=Low_...&action=product
Basically it shuts off your fuel pump or ignition if your oil pressure drops below 12psi, which is about 0.8 Bar. Normal s2000 idle oil pressure is around 1.3 Bar.
It doesn't say how it works on the description, but I assume it keeps its two poles connected and disconnects them below 12psi, much like a normally closed push button that disconnects when you push it.
Has anybody used this in their car before? Any input? Im strongly thinking of getting this although I have a oil pressure gauge but this extra line of protection sounds good too.
01-13-2011, 10:13 AM
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You would be most likely to encounter oil starvation in high lateral G corners. I would not want my engine cutting and upsetting the balance of the car under these conditions.
-- Chris
-- Chris
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01-13-2011, 10:29 AM
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Originally Posted by Chris@SoS,Jan 13 2011, 11:13 AM
You would be most likely to encounter oil starvation in high lateral G corners. I would not want my engine cutting and upsetting the balance of the car under these conditions.
-- Chris
-- Chris
01-14-2011, 12:50 PM
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What makes the oil pressure drop?
Low oil level itself doesn't unless it is really low.
Low oil level & driving does however.
So lets say you're taking an offramp with low oil level: you brake and turn in and the pressure drops enough to trip the sensor in question.
All that happens is fuel cut off, as if you reached redline.
The engine is still spinning, with low load, that's true.
I doubt it will save anything.
IMO when the sensor trips & engine running = the damage is done.
It might work if the oil pressure doesn't get any higher than the threshold before/during starting.
Then the engine will not start = save.
Btw.. if it only cuts the fuel, the engine will "start" again once the pressure comes back up.
Unless you create some electrical circuit with a relay that needs an input after it lost power (you have to push-to-start again).
Low oil level itself doesn't unless it is really low.
Low oil level & driving does however.
So lets say you're taking an offramp with low oil level: you brake and turn in and the pressure drops enough to trip the sensor in question.
All that happens is fuel cut off, as if you reached redline.
The engine is still spinning, with low load, that's true.
I doubt it will save anything.
IMO when the sensor trips & engine running = the damage is done.
It might work if the oil pressure doesn't get any higher than the threshold before/during starting.
Then the engine will not start = save.
Btw.. if it only cuts the fuel, the engine will "start" again once the pressure comes back up.
Unless you create some electrical circuit with a relay that needs an input after it lost power (you have to push-to-start again).
01-14-2011, 01:19 PM
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^^ Thanks.
The recommended installation is with a push button to act as a start bypass. I think the sensor is meant strictly for racing to avoid further damage to the engine.
The recommended installation is with a push button to act as a start bypass. I think the sensor is meant strictly for racing to avoid further damage to the engine.