Any news on gas engine CUTS?

[buickanddeere]

I thought the reason CI engines (diesels) have high compression is so they "run" since nothing else but high temps are creating ignition. Expansion ratio and compression ratio in a normally aspirated gas engine is usually talked about in the same circles and tend to run equivalent. When turbines or supercharging is introduced, you then achieve differentiations or if the cycle is measured after TDC.

It is however the expansion ratio that makes a diesel more efficient.

At part load the difference in effective compression ratio and the effective expansion ratio of a spark ignition engine. Makes them more efficient than a diesel in a part load application with full compression even at part load.

 

[GManBart]

you're normally very good about not making mistakes but this is just flat wrong

shall we (red is mine)



so 9 tractors, 5 are in buickanddeeres guess of 50-100 hr/yr, or less, not much use, 2 are just over 100 at 109.9 and 116.3, to me that's closer to 50-100 hr/yr than the 1000 hr that has been thrown around in this thread, and 2 more in the low to mid 200s hr/yr.

i would agree with buickanddeere lots of people who buy tractors average 100ish hours a year or less, just my experience. no not everyone, and i would guess lots of the tractor enthuists on TBN are greater than that.

It seems I did a poor job of cutting and pasting...it happens. These got left off:

2010 B2630 with 850 hours. 170hrs/yr
2004 L4330 with 1,970 hours. 179hrs/yr
2008 L5740 with 856 hours. 122hrs/yr

I still don't think it makes any difference because the manufacturers have to build the machines with the expectation they're going to be run for many thousands of hours, and we still have no data on how much of a savings in purchase price would come with a gas engine option....so it's all guesswork.

 

[buickanddeere]

Read these links and please tell that Kubota and Whiteman are so wrong.

Kubota Engine America - LATEST NEWS
The Impact of Tier 4 Diesel Engines - Concrete Construction

179hrs a year that averages 29 minutes a day. 100hr a year averages 16 minutes a day. Does either amount of use indicate full power operation from sunup to sunset for weeks at a time during planting and harvest ?

 

[Hinomotoman]

Why do you want 23 to 1 compression in a spark ignition engine ?

I don't want it. You keep comparing diesels to ignition engines and I'm just saying that's not an equal comparison on durability unless the both engines have the same compression. We all know that dragster engines have to be rebuilt every 1/4 mile.

Eugene

 

[buickanddeere]

I don't want it. You keep comparing diesels to ignition engines and I'm just saying that's not an equal comparison on durability unless the both engines have the same compression. We all know that dragster engines have to be rebuilt every 1/4 mile.

Eugene

Are you serious ? Really? You are talking about dragster engines ? How can you make a point with that ? That is even more out of context than a 23 to 1 spark ignition engine .

 

[buickanddeere]

For the doubters that the EPA is not finished with their power trip and regulating everything until only solar, wind, natural gas and batteries are the only energy sources. Tier V is on it's way.
For those that said they could not find so much as a sniff of Tier V. This took less than five minutes.
Are you ready for Tier 5 emissions regulations? | Equipment World | Construction Equipment, News and Information | Heavy Construction Equipment
paragraph #2 State of the Industry 2012 - John Deere Power Systems
Tier V info and a map that shows why their is still a massive world market for non particulate trap diesels . The same countries also luxury tax gasoline prices above diesel prices. http://cumminsemissionsolutions.com...ry_Asset/PDF/Off-Hwyl_CES_Pocketcard_2_14.pdf

 

[GManBart]

Read these links and please tell that Kubota and Whiteman are so wrong.

Kubota Engine America - LATEST NEWS
The Impact of Tier 4 Diesel Engines - Concrete Construction

179hrs a year that averages 29 minutes a day. 100hr a year averages 16 minutes a day. Does either amount of use indicate full power operation from sunup to sunset for weeks at a time during planting and harvest ?

Posting the same links over and over proves nothing, and simply wastes space. Neither company is saying those engines are going to be used in tractors.

Trying to say that 179 hours a year means the machine was used 29 minutes a day is ridiculous. More likely is the machine is used for several hours at a time, then parked for multiple days before being used again.

 

[GManBart]

For the doubters that the EPA is not finished with their power trip and regulating everything until only solar, wind, natural gas and batteries are the only energy sources. Tier V is on it's way.
For those that said they could not find so much as a sniff of Tier V. This took less than five minutes.
Are you ready for Tier 5 emissions regulations? | Equipment World | Construction Equipment, News and Information | Heavy Construction Equipment
paragraph #2 State of the Industry 2012 - John Deere Power Systems
Tier V info and a map that shows why their is still a massive world market for non particulate trap diesels . The same countries also luxury tax gasoline prices above diesel prices. http://cumminsemissionsolutions.com...ry_Asset/PDF/Off-Hwyl_CES_Pocketcard_2_14.pdf

Again, you're speculating. To quote your own article:

"Since European and U.S. regulations have been nearly identical for more than a decade, presumably the United States will adopt the same standards as Stage V at the same time and likely call them Tier 5. But the U.S. Environmental Protection Agency has not yet said if it wants these new regulations or when."

As I've said previously, actual experts on the topic disagree on whether anything like a Tier V regulation would even have a significant impact on off-road equipment diesel engines.
Beyond Tier 4 Engine... | New Tractors | Agriculture

 

[buickanddeere]

Posting the same links over and over proves nothing, and simply wastes space. Neither company is saying those engines are going to be used in tractors.

Trying to say that 179 hours a year means the machine was used 29 minutes a day is ridiculous. More likely is the machine is used for several hours at a time, then parked for multiple days before being used again.

Your trying to sway the topic from a typical CUT being used 150-200hrs a year instead of 50-100hrs a year
Is acomishing what?
The 200HP field tractor that sees HD operation for a 1000hrs a year . It spends 88% of it's time parked in the shed.
I keep posting the links hoping that you would read and understand the info.

 

[buickanddeere]

Again, you're speculating. To quote your own article:

"Since European and U.S. regulations have been nearly identical for more than a decade, presumably the United States will adopt the same standards as Stage V at the same time and likely call them Tier 5. But the U.S. Environmental Protection Agency has not yet said if it wants these new regulations or when."

As I've said previously, actual experts on the topic disagree on whether anything like a Tier V regulation would even have a significant impact on off-road equipment diesel engines.
Beyond Tier 4 Engine... | New Tractors | Agriculture

Tier V regs which some folk vigerously the existence of until yesterday. The tier V will require even more restrictive filters than what are used now. That is more regeneration cycles and more cost to save money by operating a diesel.
Kubota stated industrial and construction applications. Does that sound like light duty, medium duty or heavy duty service ?
Have you researched spark ignition class 8 trucks ?