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 > Diesel Emissions Impact on Health New Low Emissions Engines

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NewsW

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Posted: 04/14/12 11:02am Link  |  Print  |  Notify Moderator

Starting in 2013, the rate of decline in prices of digital electronics components like memory and microprocessors will slow from dropping 50% every 18 months to taking 3 years or 36 months.

That trend line will continue out to 2020, which means the price of a functionally identical digital electronic component that cost $100 in 2012 will cost $50 in 2015, then $25 in 2018.

Jarlaxle

New England

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Posted: 04/14/12 12:11pm Link  |  Print  |  Notify Moderator

rvert10 wrote:

I'm Rick James wrote:

NewsW wrote:

Anyone who signed onto first generation DPF / SCR technology is going to get mugged.

3rd or 4th generation technology will be much better... on the market around 2025.


Why don't you tell us about it Nostradamus?


I'm curious too. Where in the H**l do you get your information?


The mouse in his pocket?

Or the voices in his head?


John and Elizabeth (Liz), with 3 nutty cats
My beloved St. Bernard, Marm, lost him 1/2/12
Current rig:
1992 International Genesis school bus conversion

Jarlaxle

New England

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Posted: 04/14/12 12:12pm Link  |  Print  |  Notify Moderator

NewsW wrote:

Starting in 2013, the rate of decline in prices of digital electronics components like memory and microprocessors will slow from dropping 50% every 18 months to taking 3 years or 36 months.

That trend line will continue out to 2020, which means the price of a functionally identical digital electronic component that cost $100 in 2012 will cost $50 in 2015, then $25 in 2018.


Which has what, exactly, to do with the topic?!?!

Just more five dollar words from a five cent mind.

rvert10

Utah

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Posted: 04/14/12 01:07pm Link  |  Print  |  Notify Moderator

Jarlaxle wrote:

NewsW wrote:

Starting in 2013, the rate of decline in prices of digital electronics components like memory and microprocessors will slow from dropping 50% every 18 months to taking 3 years or 36 months.

That trend line will continue out to 2020, which means the price of a functionally identical digital electronic component that cost $100 in 2012 will cost $50 in 2015, then $25 in 2018.


Which has what, exactly, to do with the topic?!?!

Just more five dollar words from a five cent mind.

Now I'm wondering if his knowledge is worth that much


08 Dodge Mega Cab DRW,6spd auto, Exhaust break, 8'bed conversion (Best mistake I've made)
35' Teton Home Experience 3 slides, its not a trailer its a home
5500 watt generator
and a beautiful Co-piolet

I'm Rick James

Reno, NV, USA

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Posted: 04/14/12 01:09pm Link  |  Print  |  Notify Moderator

NewsW wrote:

Starting in 2013, the rate of decline in prices of digital electronics components like memory and microprocessors will slow from dropping 50% every 18 months to taking 3 years or 36 months.

That trend line will continue out to 2020, which means the price of a functionally identical digital electronic component that cost $100 in 2012 will cost $50 in 2015, then $25 in 2018.


Is that what's hanging underneath my truck that filters the exhaust, "digital electronics"?

NewsW

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Posted: 04/14/12 03:18pm Link  |  Print  |  Notify Moderator

A 2025 Model year Chevy Silverado will have do 25+mpg on gasoline.

I'm Rick James

Reno, NV, USA

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Posted: 04/15/12 10:32am Link  |  Print  |  Notify Moderator

NewsW wrote:


Nguyen, T., Le, C., Park, J., and Lee, S., "A 3D CFD Simulation for Optimization of Metal Fiber DPF System,"


Baek, K., Choi, H., Bae, G., and Woo, M., "A Study on Regeneration Strategies of Cordierite-DPF Applied to a Diesel Vehicle,"


I thought we took most of those guys out back in Nam.



summithmk

butt#$%$ egypt, NV

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Posted: 04/15/12 08:54am Link  |  Print  |  Notify Moderator

NewsW wrote:

Lets see what is on the horizon:

Quote:

Metal fiber DPF system is cheaper and more endurable than ceramic filter ; however, the regeneration near the wall (outer layer) is difficult because of the heat loss and the less gas flow rate near the wall. In this study, a 3D CFD simulation is performed to find the flow control method for the more uniform mass flux for all filter layer. The major control factors are filter porosity, distribution plate and swirler. By placing the distribution plate in front of the filter the flow near the wall can be increased. The optimum place and size was chosen. The swirler can increase the flow more near the wall.


Nguyen, T., Le, C., Park, J., and Lee, S., "A 3D CFD Simulation for Optimization of Metal Fiber DPF System,"


Quote:

Diesel Particulate Filter (DPF) system is considered as the most effective method to reduce particulate mater (PM) out of diesel exhaust. In general, silicon carbide (SiC) has been employed as the base materials for DPF substrate in diesel vehicles. Currently, a material, called cordierite (Cd), has been adopted for the DPF in a modern SUV with 2-liter CRDI diesel engine, complying EURO-5 emission regulation. Instead of its lower cost, Cd-based substrate was disadvantageous on thermal conductivity and heat capacity relative to SiC. In this work, the problems (i.e., face crack), initiated by the thermal drawbacks, were investigated as it applied into the DPF substrate. As the countermeasures to overcome, a control optimization of regeneration temperature elevation and an introduction of ingenious multiple regeneration strategy at problematic conditions were proposed and verified through real-road endurance tests.



Baek, K., Choi, H., Bae, G., and Woo, M., "A Study on Regeneration Strategies of Cordierite-DPF Applied to a Diesel Vehicle,"


Sweet copy and paste from a google search. You get those MAF tables figured out yet? I'm still waiting.

Jarlaxle

New England

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Posted: 04/14/12 04:32pm Link  |  Print  |  Notify Moderator

Is that word salad actually intended to make sense?

NewsW

US

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Joined: 02/06/2012

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Posted: 04/14/12 05:11pm Link  |  Print  |  Notify Moderator

Lets see what is on the horizon:

Quote:

Metal fiber DPF system is cheaper and more endurable than ceramic filter ; however, the regeneration near the wall (outer layer) is difficult because of the heat loss and the less gas flow rate near the wall. In this study, a 3D CFD simulation is performed to find the flow control method for the more uniform mass flux for all filter layer. The major control factors are filter porosity, distribution plate and swirler. By placing the distribution plate in front of the filter the flow near the wall can be increased. The optimum place and size was chosen. The swirler can increase the flow more near the wall.


Nguyen, T., Le, C., Park, J., and Lee, S., "A 3D CFD Simulation for Optimization of Metal Fiber DPF System,"


Quote:

Diesel Particulate Filter (DPF) system is considered as the most effective method to reduce particulate mater (PM) out of diesel exhaust. In general, silicon carbide (SiC) has been employed as the base materials for DPF substrate in diesel vehicles. Currently, a material, called cordierite (Cd), has been adopted for the DPF in a modern SUV with 2-liter CRDI diesel engine, complying EURO-5 emission regulation. Instead of its lower cost, Cd-based substrate was disadvantageous on thermal conductivity and heat capacity relative to SiC. In this work, the problems (i.e., face crack), initiated by the thermal drawbacks, were investigated as it applied into the DPF substrate. As the countermeasures to overcome, a control optimization of regeneration temperature elevation and an introduction of ingenious multiple regeneration strategy at problematic conditions were proposed and verified through real-road endurance tests.



Baek, K., Choi, H., Bae, G., and Woo, M., "A Study on Regeneration Strategies of Cordierite-DPF Applied to a Diesel Vehicle,"

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