RollTideRam
Veteran Member
I have never heard of the Tatra trucks, till I ran across some "Truck Trials" on youtube. I wish I had one of them now. JC
Adios Caterpillar in OTR
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Renze
Elite Member
RollTideRam said:
In the truck trials, they use old T-813 models, which are built between 1967 and 1983:
YouTube - Tatra T-813 8x8 military prototype testing
In 1983 they were succeded by the T-815 range.
The T-813 has a naturally aspirated 17 liter, later 19 liter diesel engine, that puts out about 250 hp. Versions of this engine, in the T-815 model range put out 470 hp with turbo and intercooling. Most of the trial trucks are fitted with an aftermarket turbo.
Tatra used to be the year-after-year winner of the Paris-Dakar desert rallye, untill they changed the rules, making it a 2 week event instead of 4 week endurance: Other brands complained about Tatra winning every year because of their independent wheel suspension, the other manufacturers, using an on-road derived truck, many times couldnt finish because they ran out of suspension spare parts ....
YouTube - tatra dakar test tunis
Because of that reason, some American prairie fire corps also use them: YouTube - Tatra T-815 8x8 firetruck testing
I allways wanted to buy a T-813 and fit it with a silage superstructure: When Holland has one of its infamous wet harvests, only these trucks can plough through the mud without breaking differentials...
By the way, Tatra also built luxury cars: in 1938 they had the world's first streamlined car, with aluminium overhead cam V8. between both world wars, the Czech region of Moravia, was the Silicon Valley of that era...
YouTube - Tatra 100+ Years History Intro
By the way, did you know that the VW Beetle design didnt originate from Ferdinand Porsche, NOR Adolf ****** ???
In 1961, VW payd 3 million german Reichsmark to Tatra, for breaking a near 20 Tatra patents, in the Volkswagen Beetle:
YouTube - TATRA history on Top Gear BBC 1993
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workinallthetime
Veteran Member
i want a unimog!!!!!
looks like IH is going to be the stcok to have with them buying gm medium duty and now lovin on cat to. Multiple injections during one combustion cycle is not new, isuzu has been doing that for years and the current 5.2 and 7.8 can do up to 7 events.
When i was at allison school they told us that all the major otr truck engine guys just payd the fines for 2 years until they could figure out what to do with their engines to meet the epa ****'s. I watched a 6.6 durimax go from 21-23 mpg in 01 to as low as 13 mpg in 07, thats just great for the tree huggers!!!
looks like IH is going to be the stcok to have with them buying gm medium duty and now lovin on cat to. Multiple injections during one combustion cycle is not new, isuzu has been doing that for years and the current 5.2 and 7.8 can do up to 7 events.
When i was at allison school they told us that all the major otr truck engine guys just payd the fines for 2 years until they could figure out what to do with their engines to meet the epa ****'s. I watched a 6.6 durimax go from 21-23 mpg in 01 to as low as 13 mpg in 07, thats just great for the tree huggers!!!
Renze
Elite Member
Very true, the Volkswagen engines use a lot more fuel since the new emission versions have arrived. Not all manufacturers can think in terms of emissions, when research has been on fuel economy and smooth running, for years.
Thats why many manufacturers embrace the SCR (selective catalytic reduction) which sprays AdBlue (a trade name for ureum, also found in cow urine ) into the exhaust muffler, which deals with emissions after the engine, so the engine developers can keep doing what they have done for years, running its research programs on fuel economy, while the SCR system deals with emissions outside of the engine.
Scania (from Sweden, one of Europes premium truckmakers next to DAF (paccar) and Volvo) has been advertising its trucks with EGR systems, mentioning the absence of the SCR system (needing frequent Ureum refills). However most of them, in the end, all use SCR for their Euro 5 versions. its inevitable if you want to keep them running efficiently.
The emission laws have put engine development in a whole new perspective, and have put a lot of manufacturers back to basics.
Thats why many manufacturers embrace the SCR (selective catalytic reduction) which sprays AdBlue (a trade name for ureum, also found in cow urine
) into the exhaust muffler, which deals with emissions after the engine, so the engine developers can keep doing what they have done for years, running its research programs on fuel economy, while the SCR system deals with emissions outside of the engine.Scania (from Sweden, one of Europes premium truckmakers next to DAF (paccar) and Volvo) has been advertising its trucks with EGR systems, mentioning the absence of the SCR system (needing frequent Ureum refills). However most of them, in the end, all use SCR for their Euro 5 versions. its inevitable if you want to keep them running efficiently.
The emission laws have put engine development in a whole new perspective, and have put a lot of manufacturers back to basics.
Off topic, but I find it a bit amusing crediting the Iraq war to a post Korean war Chech Tatra truck, and not even mentioning the brave coalition soldiers who served and other fine American military apparatus that scored a shocking & convincing victory there.
QRTRHRS
Elite Member
Oh' great, now after fueling up, we need to stop by the farm and fill up with cow's urine!
dmccarty
Super Star Member
QRTRHRS said:
I always wondered about the engines requiring Urea to clean out the exhaust gunk. Could we just wee in to the tank to provide the Urea?
Saves the environment twice! The Ford/Navstar engines uses diesel fuel to burn the gunk from the exhaust. Its easier but at 4.76 a gallon seems expensive. Wee is Free.
Later,
Dan
Renze
Elite Member
AdBlue - Wikipedia, the free encyclopedia
it says:
==========================================
The US EPA's 2010 legislation will limit NOx to levels that will require North American trucks to be equipped with SCR post-2010. The trademark - AdBlue - will not be used in the US market; the most likely name for AUS32 will be Diesel Emissions Fluid (DEF).
==========================================
Sorry, but mentioning the simple fact, that American soldiers used these Tatra trucks unknown to most of you, does not equal "crediting the Iraq war to a post Korean war Chech Tatra truck", nor does deny the courage of American soldiers.
I'm sorry if you dislike my objective war tech review, that didnt take the political and, for many american veterans, personal factors of these wars into concideration. Just, you're drawing the wrong conclusions, i totally ignored the political bias in my remarks, and brought up just some bare facts that interest me, as an engineer.
But, if you mentioned the heros, because the ones that risk their lives for the freedom of others, cant be respected enough, i totally agree with that.
Burning diesel in the catalyser, can only help to clear the diesel particle filter periodically, when the operating temperature is high enough. Diesel doesnt help with NoX emissions though...
it says:
==========================================
The US EPA's 2010 legislation will limit NOx to levels that will require North American trucks to be equipped with SCR post-2010. The trademark - AdBlue - will not be used in the US market; the most likely name for AUS32 will be Diesel Emissions Fluid (DEF).
==========================================
Builder said:
Sorry, but mentioning the simple fact, that American soldiers used these Tatra trucks unknown to most of you, does not equal "crediting the Iraq war to a post Korean war Chech Tatra truck", nor does deny the courage of American soldiers.
I'm sorry if you dislike my objective war tech review, that didnt take the political and, for many american veterans, personal factors of these wars into concideration. Just, you're drawing the wrong conclusions, i totally ignored the political bias in my remarks, and brought up just some bare facts that interest me, as an engineer.
But, if you mentioned the heros, because the ones that risk their lives for the freedom of others, cant be respected enough, i totally agree with that.
dmccarty said:The Ford/Navstar engines uses diesel fuel to burn the gunk from the exhaust. Its easier but at 4.76 a gallon seems expensive. Wee is Free.
Burning diesel in the catalyser, can only help to clear the diesel particle filter periodically, when the operating temperature is high enough. Diesel doesnt help with NoX emissions though...
