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Old 04-17-2016, 11:53 AM   #21
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Baker- Factory Cummins panels have a printed circuit board that monitors the signal from the oil pressure gauge transducer, aka sender, and trips alarm based on that. So only one device monitoring oil pressure, drives the alarm and gauge. So if sender goes whacky, both the reading and alarm will be off. And senders do go whacky.

Many boatbuilders scrap that system and install their own alarm system, an OP switch and a sender for the gauge. This is a better route as the PCB alarm boards have proven sensitive to humidity and cause trouble on their own. You get a bit more redundancy, too. Two devices checking same thing.
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Old 04-17-2016, 01:36 PM   #22
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IP timing is set advanced to allow injection at best time at high rpm compensating for injection delay. at low rpm injection is way too early
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Old 04-17-2016, 05:28 PM   #23
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From the Cummins manual minimum at idle (600 RPM +-50) 10 PSI. Minimum at rated RPM 30 PSI and the pressure relief valve opens at 65 PSI.
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Old 04-17-2016, 11:27 PM   #24
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Quote:
Originally Posted by Ski in NC View Post
Baker- Factory Cummins panels have a printed circuit board that monitors the signal from the oil pressure gauge transducer, aka sender, and trips alarm based on that. So only one device monitoring oil pressure, drives the alarm and gauge. So if sender goes whacky, both the reading and alarm will be off. And senders do go whacky.

Many boatbuilders scrap that system and install their own alarm system, an OP switch and a sender for the gauge. This is a better route as the PCB alarm boards have proven sensitive to humidity and cause trouble on their own. You get a bit more redundancy, too. Two devices checking same thing.
Well dammit....a missed opportunity!!!!!
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