Dg exhaust

DG R-SERIES EXHAUST

There are two reasons people buy aftermarket exhaust systems: 1) performance and 2) the Rolex factor. Even though most riders won’t admit it, the second reason seems to be a major factor; it’s the “Hey look at me, I have money to stuff in a Howitzer” syndrome. There’s no other explanation for the $1000 exhaust phenomenon, especially when there are products like the  DG R-Series exhaust available. This is a quality slip-on exhaust, made in Anaheim California that out-performs virtually any stock exhaust system and sells for under $200.
PIPE HYPE
      There are no exotic metals in the R-series. It’s an aluminum canister with a steel core and mid-section. The end-cap is a polished piece that is removable so that the muffler can be repacked. But overall, the look is one of quality, so Rolex-wearing riders won’t be too disappointed as long as they can conceal the price from their fashion conscious friends. DG offers the same basic product in a O-Series, which simply means it has a oval-shaped canister and end cap for the same price. The only difference is the look.
      Performance-wise, both represent a significant boost. We tried the R-Series on a Yamaha Raptor 700 with great results. The DG pipe bolts into place in minutes with a perfect fit. The increase in power is significant, with most of the boost coming right off the bottom. The Raptor is somewhat bottled up in stock form, and some increase in throttle response can be gained simply by removing the stock airbox lid. In the age of fuel-injection, there’s a thin line between modifications that can be handled by the stock fuel mapping and those that throw the whole system out of whack. It’s clear that Yamaha engineers made some allowance for modification with the Raptor. With the airbox lid removed, there is no real penalty. With any pipe, you can start getting into uncharted territory. The EPA-approved EFI settings are lean, so when you have a more free-flowing system, you can create lean surges and hesitations. With the DG pipe, we only noticed that the Raptor took longer to warm up. Once up to operating temperature, feeling of  an overly lean-mixture disappeared and the performance was boosted in every way.
      Still, it’s clear that there’s more performance hidden in the Raptor 700 without resorting to real motor modifications. DG is currently testing an EFI mod box that will allow you to alter the stock fuel injections settings. We tried the prototype and it worked well. In the meantime, there are similar products available from companies like Dynojet. These generally are expensive (in the $400 range) and frankly hard to justify if you only have a aftermarket pipe. If you plan on more modification, EFI mods will probably be necessary.
THE TRAIL FACTOR
      Any aftermarket pipe is going to be louder than stock. The production Raptor 700 is whisper quiet and the DG R-Series increases the bark by a significant margin. Our somewhat informal testing puts it around 97 dB at 4000 rpm, which is acceptable for private land and racetracks, but too loud for sensitive areas. DG sells a quiet insert for an additional $24 that brings the output down to around 94 dB. It reclaims much of the performance gain, but it’s small and easily installed or removed. Even with the quiet insert in place, the total weight of the DG system is two pounds lighter than stock. How does that compare to a titanium/carbon fiber, hey-look-at-me system? The extra $800 buys you another pound of weight savings.
      That’s the reason we like the DG system so much. New ATV sales are in the gutter because of the economy, so it doesn’t make sense to spend big money putting a glitzy exhaust on an old ATV. We prefer spending smart money, and this is definitely falls into the smart category. For more information, go to www.DGperf.com, call (866) 653-1647 or go to any dealer that carries DG products.

Sours: https://dirtwheelsmag.com/dg-r-series-exhaust/

Diesel Exhaust Gas

Hannu Jääskeläinen

This is a preview of the paper, limited to some initial content. Full access requires DieselNet subscription.
Please log in to view the complete version of this paper.

Abstract: Exhaust gas is discharged from the engine through the exhaust system. Exhaust gas properties which are important for the exhaust system design include its physical properties, exhaust gas temperature—which depends of the vehicle duty and/or test cycle—and the exhaust gas flow rate.

Exhaust Gas Properties

Engine exhaust gases are discharged into the environment through the exhaust system. The exhaust system includes several specialized components, ranging from mufflers to emission aftertreatment devices. The designer of the exhaust system and/or exhaust system components must know a number of exhaust gas properties.

Compared to the composition of air, the diesel exhaust gas contains increased concentrations of water vapor (H2O) and carbon dioxide (CO2)—the main combustion products. The concentrations of both H2O and CO2 can vary from a few percent, up to about 12% in diesel exhaust. These combustion products displace oxygen, the concentration of which can vary from a few percent, up to about 17% (compared to 21% in ambient air). The main component of diesel exhaust, just as is the case with ambient air, is nitrogen (N2). By comparison, the concentrations of diesel exhaust pollutants are very small—for the purpose of calculating the physical properties of diesel exhaust gas, they can be neglected.

As an approximation, the properties of air can be used for diesel exhaust gas calculations, Table 1 [175]. The error associated with neglecting the combustion products is usually no more than about 2%. In a more rigorous approach, corrections must be taken to account for the actual exhaust gas composition (increased H2O and CO2, decreased O2). An additional difficulty with this approach is the necessity to account for the variable exhaust gas composition, which changes with the engine load factor and the air-to-fuel ratio. Physical properties of mixtures of gases, and methods to calculate them from the properties of components can be found in the literature [363].

TρhsCpµk
2601.340260.06.7271.0060.1650.0231
2801.245280.26.8021.0060.1750.0247
3001.161300.36.8711.0070.1850.0263
3500.995350.77.0261.0090.2080.0301
4000.871401.27.1611.0140.2300.0336
4500.774452.17.2821.0210.2510.0371
5000.696503.47.3891.0300.2700.0404
6000.580607.57.5791.0510.3060.0466
8000.435822.57.8881.0990.3700.0577
10000.3481046.88.1381.1410.4240.0681
12000.29012788.3491.1750.4730.0783
14000.24915158.5311.2070.5270.0927

In addition to the physical properties, the exhaust system designer must know certain other exhaust gas parameters. These include exhaust gas temperature—which is of special importance for the design of catalytic aftertreatment devices, as catalyst performance is a function of temperature—and exhaust gas flow rate. Both parameters are discussed in the following sections.

Engine Exhaust Back Pressure

Another important parameter is the maximum pressure drop through the exhaust system, caused by the hydraulic resistance of exhaust system components. This parameter—commonly referred to as the “engine backpressure”—requires that the engine perform additional pumping work, and has other impacts on engine operation which are discussed under Engine Exhaust Back Pressure.

###

Sours: https://dieselnet.com/tech/diesel_exh.php
  1. Perfume stand
  2. Maxpreps lacrosse
  3. 1930s hair
  4. Tiny epic pirates release date
  5. Cricut laser engraver
Black Dg Performance Rcm Ii Slip-on Exhaust For Kawasaki Kfx450

 

DG Performance RCM II Slip-On Exhaust For Yamaha Raptor 700R

DG Performance - Exhaust

$259.95See Details

This updated version of DG Performance's RCM slip-on exhaust is perfect for the racers on a tight budget - Features all steel construction with a Reverse Cone Megaphone design - Reverse Cone design helps scavenge exhaust gases from the cylinder for added performance - Others features include an aluminum turn-down end cap and removable screen-type spark arrestor - Black muffler with aluminum end cap - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Black Dg Performance Rcm Ii Slip-on Exhaust For Kawasaki Kfx450

 

DG Performance RCM II Slip-On Exhaust For Yamaha Raptor 660R

DG Performance - Exhaust

$259.95See Details

This updated version of DG Performance's RCM slip-on exhaust is perfect for the racers on a tight budget - Features all steel construction with a Reverse Cone Megaphone design - Reverse Cone design helps scavenge exhaust gases from the cylinder for added performance - Others features include an aluminum turn-down end cap and removable screen-type spark arrestor - Black muffler with aluminum end cap - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Black Dg Performance Rcm Ii Slip-on Exhaust For Kawasaki Kfx450

 

DG Performance RCM II Slip-On Exhaust For Yamaha YFZ450

DG Performance - Exhaust

$259.95See Details

This updated version of DG Performance's RCM slip-on exhaust is perfect for the racers on a tight budget - Features all steel construction with a Reverse Cone Megaphone design - Reverse Cone design helps scavenge exhaust gases from the cylinder for added performance - Others features include an aluminum turn-down end cap and removable screen-type spark arrestor - Black muffler with aluminum end cap - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Black Dg Performance Rcm Ii Slip-on Exhaust For Kawasaki Kfx450

 

DG Performance RCM II Slip-On Exhaust For Honda TRX450R 04-05

DG Performance - Exhaust

$259.95See Details

This updated version of DG Performance's RCM slip-on exhaust is perfect for the racers on a tight budget - Features all steel construction with a Reverse Cone Megaphone design - Reverse Cone design helps scavenge exhaust gases from the cylinder for added performance - Others features include an aluminum turn-down end cap and removable screen-type spark arrestor - Black muffler with aluminum end cap - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Anodized Aluminum Dg Performance Bullet Exhaust Full System For Yamaha Raptor 700r

 

DG Performance Bullet Exhaust Full System For Yamaha YFZ450 04-09

DG Performance - Exhaust

$509.95See Details

The most advanced complete exhaust system on the market - Designed for the serious rider demanding the best - Features stainless steel headpipe and inlet pipe, billet aluminum CNC-machined end cap and brackets and anodized muffler body - Removable screen-type spark arrestor included; replacement spark arrestor sold separately - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Aluminum Dg Performance Rcm Exhaust System For Polaris Scrambler 500

 

DG Performance RCM Exhaust System Aluminum For Suzuki LT230S LT230E

DG Performance - Exhaust

$284.95See Details

RCM tapered reverse cone megaphone systems come with aluminum alloy muffler - Provide large increases in acceleration and top-end speed - Tuned for maximum peak horsepower and thrust - Repackable spiral-fluted core silencers - Large-diameter steel headpipes included (unless noted) - Available without spark arrestors only - Fits the following Suzuki models: - QUADSPORT 230 1985-1987 (LT230S) - QUADRUNNER 230 1992-1994 (LT230E) - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

N/a Dg Performance National 2-stroke Pipe For Yamaha Blaster

 

DG Performance National 2-Stroke Pipe POL Trail Blazer

DG Performance - Exhaust

$334.95See Details

High-output exhaust systems; the surest way to increase your ATV’s horsepower and acceleration - Race tested and proven for top performance gains - Hand fabricated - Includes oval silencer (not shown) - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Anodized Stainless Steel Dg Performance Rcm Exhaust System Steel For Yamaha Timberwolf

 

DG Performance RCM Exhaust System STL For Yamaha Wolverine 350

DG Performance - Exhaust

$284.95See Details

RCM tapered reverse cone megaphone systems come with steel muffler - Provide large increases in acceleration and top-end speed - Tuned for maximum peak horsepower and thrust - Repackable spiral-fluted core silencers - Large-diameter steel headpipes included (unless noted) - Available without spark arrestors only - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Anodized Stainless Steel Dg Performance Rcm Exhaust System Steel For Yamaha Timberwolf

 

DG Performance RCM Exhaust System Steel For Yamaha Timberwolf

DG Performance - Exhaust

$259.95See Details

RCM tapered reverse cone megaphone systems come with steel muffler - Provide large increases in acceleration and top-end speed - Tuned for maximum peak horsepower and thrust - Repackable spiral-fluted core silencers - Large-diameter steel headpipes included (unless noted) - Available without spark arrestors only - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Anodized Stainless Steel Dg Performance Rcm Exhaust System Steel For Yamaha Timberwolf

 

DG Performance RCM Exhaust System Steel For Yamaha Warrior

DG Performance - Exhaust

$284.95See Details

RCM tapered reverse cone megaphone systems come with steel muffler - Provide large increases in acceleration and top-end speed - Tuned for maximum peak horsepower and thrust - Repackable spiral-fluted core silencers - Large-diameter steel headpipes included (unless noted) - Available without spark arrestors only - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Nickel Plated Dg Performance Xtreme Atv Exhaust For Honda Odyssey 85

 

DG Performance XTreme ATV Exhaust For Honda Odyssey 85

DG Performance - Exhaust

$364.95See Details

High-output exhaust systems; the surest way to increase your ATV’s horsepower and acceleration - High-luster duplex nickel plating gives a durable, long-lasting finish for the best looking ATVs around - Race tested and proven for top performance gains - Steel silencer included - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Black Dg Performance Universal Bolt-on Silencer 1-1 8 Inch

 

DG Performance Universal Bolt-On Silencer 1-1/8 Inch

DG Performance - Exhaust

$92.95See Details

Suitable for older 2 or 4 stroke ATVs and custom applications - 1-1/8” fits most 250cc ATVs - Measurement is the inside diameter of mounting area - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Aluminum Dg Performance Ysr50 Exhaust System For Yamaha Ysr 50

 

DG Performance YSR50 Exhaust System Aluminum For Yamaha YSR 50

DG Performance - Exhaust

$374.95See Details

The best-looking and most-powerful pipe for the YSR50 - Increases top speed from 48 mph to 57 mph - Designed after the factory Yamaha Road Racing Pipes - Comes complete with a rebuildable oval alloy silencer - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

N/a Dg Performance National 2-stroke Pipe For Yamaha Blaster

 

DG Performance National 2-Stroke Pipe For Yamaha Blaster

DG Performance - Exhaust

$249.95See Details

High-output exhaust systems; the surest way to increase your ATV’s horsepower and acceleration - Race tested and proven for top performance gains - Hand fabricated - Use stock or DG Type II silencer (sold separately) - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Anodized Stainless Steel Dg Performance Rcm Exhaust System Steel For Yamaha Timberwolf

 

DG Performance RCM Exhaust System STL For Honda TRX 250X 300EX

DG Performance - Exhaust

$259.95See Details

RCM tapered reverse cone megaphone systems come with steel muffler - Provide large increases in acceleration and top-end speed - Tuned for maximum peak horsepower and thrust - Repackable spiral-fluted core silencers - Large-diameter steel headpipes included (unless noted) - Available without spark arrestors only - Fits the following Honda models: - TRX250X 1987-1988, 1991-1993 - TRX300EX 1993-2010 - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Black Dg Performance Universal Bolt-on Silencer 1-1 4 Inch

 

DG Performance Universal Bolt-On Silencer 1-1/4 Inch

DG Performance - Exhaust

$92.95See Details

Suitable for older 2 or 4 stroke ATVs and custom applications - 1-1/4” fits most larger ATVs - Measurement is the inside diameter of mounting area - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Black Dg Performance Brute Silent Core Exhaust For Yamaha Kodiak 400 4x4 1993-1999

 

DG Performance Brute Silent Core Exhaust For Yamaha Kodiak 400 4x4 1993-1999

DG Performance - Exhaust

$259.95See Details

Economically priced replacement mufflers for 4-stroke utility ATVs - Heavy-duty steel mufflers use the stock headpipe - Duplicates the OEM powerband - Finished in durable, high-temperature black paint - Made in the USA - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Aluminum Dg Performance Type Ii Silencer Polaris Scrambler 400

 

DG Performance Type II Silencer Aluminum For Yamaha Blaster

DG Performance - Exhaust

$139.95See Details

Free-Flow design offers virtually no obstruction of exhaust gasses - Lightweight, 6061 extruded aluminum - Throaty factory sound and free-flow design with exclusive, 42% open area perforated core for increased horsepower - Rebuildable and repackable - End cap is chrome - Please note: The image displayed is representative of the item, but may vary depending on your specific model. -

Sours: https://www.ridersdiscount.com/brands/dg-performance/exhaust?page=4

The wife began to laugh - Well, go wash away, lubricate yourself, so be it - I'll. Give you. And then you will die not fucked. He went to the bathroom, washed, crumpled a member, lengthening and swelling, and begged his wife (mentally) to give it in the. Ass.

Exhaust dg

Olya would kill me or tell Sveta, and she would definitely kill me. I sat down on a chair. Katya leaned her back on the tabletop. Her hands reached out to the knee socks, putting at first one leg on the toe, she pulled up the golf just above. The knee, then slowly did it with the other.

Why postpone. I'm on vacation anyway. What if we meet right away. " - Sergei confidently dialed the number. Okay, can you send your photo.

Similar news:

Music was playing loudly in the apartment, the neighbor was at home, and, as always, half-naked. Olya was again in her peignoir, which did not hide anything, but now I was not at all against it. The sight of her bare ass excited, and I immediately realized that I missed her.



1185 1186 1187 1188 1189