agesilaus
North Florida
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Quote: I bet the valves will love it
I doubt it, diesel engine valves get lubrication from the fuel. That is an issue with low sulfur fuel, it provides reduced lube.
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JRscooby
Indepmo
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Back in mid 70s friend had most of his inherited farm leased out, but kept old WD 45 around for chores. Had converted it and a old VW bug to run on propane. I talked to him when noticed he was driving the car on days he would normally ride his 750 Honda. He just fueled car and tractor from tank installed to heat the house, was less fun, but cost less to drive the car
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ktmrfs
Portland, Oregon
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agesilaus wrote:Quote: I bet the valves will love it
I doubt it, diesel engine valves get lubrication from the fuel. That is an issue with low sulfur fuel, it provides reduced lube.
in a diesel fuel is injected into the cylinder after the valves are closed, not sure how it provides any lubrication.
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ktmrfs
Portland, Oregon
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a spark ignition engine designed for propane operation is capable of high power output and efficiency, since propane like alcohol has a higher octane rating one can run much higher compression and much more spark advance.
Course it will use more gallons of fuel than gasoline due to the lower energy content, but it gains in thermal efficiency to partially offset.
Dual fuel engines another story, spark advance can be adjusted but not easy to adjust compression ratio.
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agesilaus
North Florida
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Let me say I'm no automotive engineer, I was going on posts like this:
Quote:ack of lubrication is a universal problem in the diesel world - older vehicles weren’t built to run on ultra low sulfur diesel (ULSD) and new vehicles are built with extremely tight tolerances, producing higher pressure and temperature, making the lack of lubricity possibility catastrophic. Every single diesel engine injection system relies on diesel fuel as a lubricant to protect and lubricate all the moving parts within the fuel system including injectors, in-line pumps and injection pumps. If the lubrication of the fuel isn’t good enough, the internal components begin to wear against themselves and can fail from excessive wear.
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Latner
Indiana
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agesilaus wrote:Quote:Yes... But I think I would rather have this than a EV truck that maybe able to pull your camper ~100 miles at best. Plus these guys claim they're able to maintain factory power.
Dream on if you think the ----- types will let you have one of these. They are busy attacking gas stoves right now after all.
and washing machines
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ktmrfs
Portland, Oregon
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agesilaus wrote:Let me say I'm no automotive engineer, I was going on posts like this:
Quote:ack of lubrication is a universal problem in the diesel world - older vehicles weren’t built to run on ultra low sulfur diesel (ULSD) and new vehicles are built with extremely tight tolerances, producing higher pressure and temperature, making the lack of lubricity possibility catastrophic. Every single diesel engine injection system relies on diesel fuel as a lubricant to protect and lubricate all the moving parts within the fuel system including injectors, in-line pumps and injection pumps. If the lubrication of the fuel isn’t good enough, the internal components begin to wear against themselves and can fail from excessive wear.
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yes, before ULSD the fuel pumps relied on the sulphur for some lubrication. it was for the high pressure fuel pump, and injectors, not the valves.
However any diesel sold afer about 2005 is designed for ULSD
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FishOnOne
The Great State of Texas
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Don't forget the 6.7 cummins that was featured in the video is a propane only engine. This thing has spark plugs.
* This post was
edited 03/20/23 03:32pm by FishOnOne *
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Learjet
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"Cummins’ biggest embrace yet of a growing menu of low carbon fuels will be applied across their B Series, L Series and X Series engine lineup. Fuel choices will include diesel, natural gas, hydrogen, propane or gasoline. Once spec’d, engines will run on one fuel only.
The first engine expected to roll out in 2024 will be a 6.7-liter gasoline-ready option, which Cummins sees as a good fit for pickups and other vehicles needing “diesel-like durability and performance,” according to Cummins’ president of engine business Srikanth Padmanabhan"
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theoldwizard1
SE MI
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I worked in that industry for awhile, so I have some experience.
Propane's biggest issue is the space required for the tank the seasonal price. If you have a fleet and have the space for your own refill station and have a HUGE tank, you can negotiate a good price during the off season.
Retail fills will kill you during the heating season !
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