Ce diaporama a bien été signalé.
Nous utilisons votre profil LinkedIn et vos données d’activité pour vous proposer des publicités personnalisées et pertinentes. Vous pouvez changer vos préférences de publicités à tout moment.
Back Pressure & Length
Calculation in Automotive
Exhaust Piping
Ahmadreza Aminian
1
First Things First….
 The exhaust piping layout begins with silencer location which should be in
relation with tailpipe l...
Determining the longest length of
tailpipe (source: )
3
Examples of long exhaust systems (i.e.
longer than 5 meters)
4
Exhaust back pressure
 The back pressure in the exhaust system must not exceed the maximum
recommended exhaust back press...
Calculation example6
Graph for calculating additional length
in exhaust system
7
Calculation process (source: )
 Backpressure is calculated by:
8
Calculation process9
Calculation Process (Equivalent Length
of Straight Pipe)
 To obtain equivalent length of straight pipe for various elbows...
Prochain SlideShare
Chargement dans…5
×

5

Partager

Télécharger pour lire hors ligne

Back pressure & length calculation in automotive exhaust

Télécharger pour lire hors ligne

Back pressure calculation process in exhaust systems with example

Livres associés

Gratuit avec un essai de 30 jours de Scribd

Tout voir

Back pressure & length calculation in automotive exhaust

  1. 1. Back Pressure & Length Calculation in Automotive Exhaust Piping Ahmadreza Aminian 1
  2. 2. First Things First….  The exhaust piping layout begins with silencer location which should be in relation with tailpipe length. In order to obtain the best noise reduction, there should only be a short tailpipe after the silencer as shown in the graph:  For all-speed engines, read the specified maximum speed for the engine  For single-speed engines, read the operating speed of the engine 2
  3. 3. Determining the longest length of tailpipe (source: ) 3
  4. 4. Examples of long exhaust systems (i.e. longer than 5 meters) 4
  5. 5. Exhaust back pressure  The back pressure in the exhaust system must not exceed the maximum recommended exhaust back pressure, including silencers. A higher exhaust back pressure leads to increased fuel consumption and a loss of power.  The maximum recommended exhaust back pressure is 100 mbar for all engines. exhaust back pressure in mmH2O. 1,000 mmH2O is equal to 100 mbar. 5
  6. 6. Calculation example6
  7. 7. Graph for calculating additional length in exhaust system 7
  8. 8. Calculation process (source: )  Backpressure is calculated by: 8
  9. 9. Calculation process9
  10. 10. Calculation Process (Equivalent Length of Straight Pipe)  To obtain equivalent length of straight pipe for various elbows: 10
  • mihirkulkarni2

    Jul. 9, 2019
  • TrungHiu63

    Mar. 24, 2019
  • mahfoozansari7

    Nov. 8, 2017
  • suren_pet

    Jun. 10, 2017
  • DeveshoanMichael1

    Feb. 22, 2017

Back pressure calculation process in exhaust systems with example

Vues

Nombre de vues

7 738

Sur Slideshare

0

À partir des intégrations

0

Nombre d'intégrations

48

Actions

Téléchargements

181

Partages

0

Commentaires

0

Mentions J'aime

5

×