BEYOND THE ENGINE

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15 Νοε 2013 (πριν από 3 χρόνια και 8 μήνες)

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Americas Commercial
Transportation Research Co., LLC• All Rights Reserved



Understanding Natural Gas Fuel Systems
















BEYOND THE ENGINE

Understanding Natural Gas Fuel Systems








BEYOND THE ENGINE: Understanding Natural Gas Fuel Systems

is published by Americas Commercial Transportation Research
Company, LLC (ACT), 4400 Ray Boll Blvd., Columbus, IN 47203. Phone: 812
-
379
-
2085, Fax: 812
-
378
-
5997, e
-
mai l:
t rucks@act research.net Copyri ght 2013 by ACT wi t h al l ri ght s reserved. Reproduct i on, copyi ng, or publ i cati on of t hi s report i
n whol e or
part i s not

permi t t ed wi t hout pri or approval. Thi s document i s f or i nt ernal use onl y. Quest i ons and subscri pt i on request s shoul d be
di rect ed t o K.W. Vi et h, Publ i sher.




Page
2

• Americas Commercial Transportation Research Co., LLC• All Rights Reserved


Table of Contents












Page Number

SECTION HIGHLIGHTS

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3


INTRODUCTION

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4

Obstacle or Opportunity?

................................
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5

Why go through t
he NG fuel evaluation process?

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................................
...........

6

Legislative Incentives

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.......................

6


NATURAL GAS TANK BASICS

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.....

8

Spark Ignited

Engines

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8

H
igh Pre
ssure Direct Injection Engines

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...........................

8

NG Speci
fications

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.............................

9

Truck Weight

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................................
..

10


CNG
TANKS


THE BASICS

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12

Weight Issues

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................................
.

13

Adsorbed Natural Gas

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14

Tank Technology

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14

Fast Fill vs. Slow Fill

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15


LNG T
ANKS


THE BASICS

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19

Cryogenics

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.....

19

The Conversion Process

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................

19

LNG Tank Specifics

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20

Venting

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................................
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21

Wes
tport Innov
ations and Transfer of Technology

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................................
........

22


W
HICH IS THE BETT
ER CHOICE OF NATURAL GAS FUEL TANKS


CNG or LNG?

...........

23

Fuel Supply

................................
................................
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................................
....

23

Fueling on the Road

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24

DNG

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24

Fuel Economy

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24

Spark Ignition

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................................
.

25

Compression Ratio

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26

HPDI

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26

Vehicle Configuration

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27


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• Americas Commercial Transportation Research Co., LLC• All Rights Reserved



S
UMMARY: WHICH IS THE BETTER CHOICE OF NATURAL GAS FUEL TANKS?

...............

28


N
EXT STEPS

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................................
................................
.

30


FINAL OBSERVATIONS

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31


SUPPLIER PROFILES

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33


A
TTACHMENTS

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................................
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............................

38


B
IBLIOGRAPHY

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................................
................................
............................

41


ABOUT ACT RESARCH

................................
................................
................................
...............

43


LET ACT HELP YOU LEARN MORE ABOUT NATURAL GAS

................................
..................

46


ACT RESEARCH SEMINARS: A great way to stay ahead of the game

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..

47


First Publication,
July/August 2013