Hi Raffe, I hope you’re doing well. If I start from May,2023,how long would it take/cost to get certified become a technical lubricant professional? I would be thankful to you for your quick response.
thanks for sharing. Interesting to note that engine lube oils designed for 'gas' engines tend to be more tolerant of the gas contaminants that could lead to poor TBN or corrosion.
it would be interesting to make a video about the characteristics of motorcycle lubricants, especially what the presence of the wet clutch entails and the jaso MA MA2 specifications.
A lot more soot, since it has special additives due to diesel oils requiring them to dissolve and keep soot in suspension. That's not really an issue with gasoline oil.
@@em4703 gasoline exhaust is far more acidic & exh water is more prevalent.. do a hot vs cold oil change & see the resultant water in the oil especially cars that do a lot of short runs
Excellent sir. Great and exhaustive work of yours is driving me to all your episodes no words from me to thank you as they are nothing to the values, I feel.
Thanks for this very informative video. I knew a lot. But with this, a question have come up in my mind that how engine lubricants work in gas engines specially CNG engines and what type of lubricants should be used in CNG car/bike engines.
Hey, I made a synthetic lubricant but want to make it thicker, right now its probably close to 140W but I want it closer to 240W. What should I add? Also, this lubricant is used on pivots so temperature is not a concern. I am not very experienced with oil making, sorry about that.
Good question. That's a pretty big jump that you're looking for. What base oil did you use? You might need to start with a higher viscosity grade. You could use a bunch of PIBs to jack up the viscosity but I don't think that would be ideal...
I am involved in thinking about hydrogen power reciprocating engines from a power generation perspective. Hydrogen burns hotter than natural gas and flame speed is faster. I wondered how much difference there will be between hydrogen and natural gas engines.
Lean burn is more efficient. Rich burn with 3 way catalyst can achieve lower overall emissions rates than a lean burn. Both types have their advantages. Please read EGSA power generation reference book chapter on large liquid cooled spark ignited engines.
however incorrect it fundamentally is.. the fuel ignition methods set significantly different design demands.. same applies to "2-stroke" comparisons.. as an example theres NO similarities between uniflow vs loop scavenged "2-strokes".. both 2-strokes!!.. nothing comparable.. homogenous charge compression ignition exemplifies the fundamental difference design demand.. applying diesel principles to "gas" fueled piston engines.. no mention of why diesel engine donut piston crown chambers.. thats a fundamental demand difference
You need to modify the title of this video with lpg/cng in parentheses. It is not plainly obvious for the first quarter of your video that you do not mean gasoline to the majority of the native English speaking world.
endless debate that lpg destroys engines... i find it funny, gas flame is colder than gasoline. en.wikipedia.org/wiki/Adiabatic_flame_temperature these guys measured exhaust temp, and lpg was colder by 20 deg c ua-cam.com/video/Kzej3WzcvAM/v-deo.html
But I once read a study that shows it bruns hotter because It doesn't cool the valves like petrol does therefore LPG might (not destroy) cause valve recession
Yeah I don't think it's necessarily going to destroy an engine given there's plenty of perfectly functional has engines out there. But the combustion characteristics are definitely different. It's flame speed as well as temperature.
Looking for more structured lubrication courses? Join LE Pro for $30AUD per month (that's about 20USD). lubrication.expert/product/le-pro/
Hi Raffe, I hope you’re doing well. If I start from May,2023,how long would it take/cost to get certified become a technical lubricant professional? I would be thankful to you for your quick response.
thanks for sharing. Interesting to note that engine lube oils designed for 'gas' engines tend to be more tolerant of the gas contaminants that could lead to poor TBN or corrosion.
Yeah, although some diesel engine oils do tend to have higher BN, particularly the marine engine oils.
it would be interesting to make a video about the characteristics of motorcycle lubricants, especially what the presence of the wet clutch entails and the jaso MA MA2 specifications.
I've had a couple of requests for this. It's on the list!
Great video, Mr. LE! I wonder how much soot a 15w40 semusyn Diesel engine Lube can handle vs. a common semisyn 15w40 Gasoline Lube ?
Good question! Unfortunately I don't have a great answer at the moment. I ask around.
A lot more soot, since it has special additives due to diesel oils requiring them to dissolve and keep soot in suspension. That's not really an issue with gasoline oil.
@@em4703 gasoline exhaust is far more acidic & exh water is more prevalent.. do a hot vs cold oil change & see the resultant water in the oil especially cars that do a lot of short runs
Excellent sir. Great and exhaustive work of yours is driving me to all your episodes no words from me to thank you as they are nothing to the values, I feel.
Thanks for this very informative video. I knew a lot. But with this, a question have come up in my mind that how engine lubricants work in gas engines specially CNG engines and what type of lubricants should be used in CNG car/bike engines.
Thanks for the informative video
No worries!
Hey, I made a synthetic lubricant but want to make it thicker, right now its probably close to 140W but I want it closer to 240W. What should I add?
Also, this lubricant is used on pivots so temperature is not a concern. I am not very experienced with oil making, sorry about that.
Good question. That's a pretty big jump that you're looking for. What base oil did you use? You might need to start with a higher viscosity grade. You could use a bunch of PIBs to jack up the viscosity but I don't think that would be ideal...
Use grease...
thank you for well explained videos Sir.....👍👍
Are you talking about CNG So natural gas or biogas
I am involved in thinking about hydrogen power reciprocating engines from a power generation perspective. Hydrogen burns hotter than natural gas and flame speed is faster. I wondered how much difference there will be between hydrogen and natural gas engines.
Lean burn is more efficient.
Rich burn with 3 way catalyst can achieve lower overall emissions rates than a lean burn.
Both types have their advantages.
Please read EGSA power generation reference book chapter on large liquid cooled spark ignited engines.
Thanks Rafe, this is a very clear and understandable explanation. Really appreciated.
Thanks James!
however incorrect it fundamentally is.. the fuel ignition methods set significantly different design demands.. same applies to "2-stroke" comparisons.. as an example theres NO similarities between uniflow vs loop scavenged "2-strokes".. both 2-strokes!!.. nothing comparable.. homogenous charge compression ignition exemplifies the fundamental difference design demand.. applying diesel principles to "gas" fueled piston engines.. no mention of why diesel engine donut piston crown chambers.. thats a fundamental demand difference
You can apparently convert a diesel engine so that it can run on gas
Passat had both turbo and supercharger
The more emissions the better
You need to modify the title of this video with lpg/cng in parentheses. It is not plainly obvious for the first quarter of your video that you do not mean gasoline to the majority of the native English speaking world.
You mean Americans? Most English speaking countries use the term Petrol.
Per inferiori
Let's go Brandon!
endless debate that lpg destroys engines...
i find it funny, gas flame is colder than gasoline. en.wikipedia.org/wiki/Adiabatic_flame_temperature
these guys measured exhaust temp, and lpg was colder by 20 deg c ua-cam.com/video/Kzej3WzcvAM/v-deo.html
But I once read a study that shows it bruns hotter because It doesn't cool the valves like petrol does therefore LPG might (not destroy) cause valve recession
Yeah I don't think it's necessarily going to destroy an engine given there's plenty of perfectly functional has engines out there. But the combustion characteristics are definitely different. It's flame speed as well as temperature.