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TitleFumigation of Alcohol in a Light Duty Automotive Diesel Engine
LanguageEnglish
File Size2.5 MB
Total Pages124
Document Text Contents
Page 1

DOE/NASAl0091-1
NASA CR-167915
CAES No. 600-81

NASA-CR-167915
19830005001

Fumigation of Alcohol in a
Light Duty Automotive
Diesel Engine

Entezaam M. H. Broukhiyan and Samuel S. Lestz
Center for Air Environment Studies
The Pennsylvania State University

August 1981

Prepared for
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
Lewis Research Center
Under Grant NAG 3-91

;t!/lSf)- ~I<-I(P 79/5
)

LANGLEY RESEARCH CENTER
LIBRARY, NASA

HAt\~?TON, VIRGINIA

for
U.S. DEPARTMENT OF ENERGY
Conservation and Renewable Energy
Office of Vehicle and Engine R&D

111'"11111" 1111 ""' "'" "'" ""1"" 1111
NF02700

https://ntrs.nasa.gov/search.jsp?R=19830005001 2020-06-07T11:08:27+00:00Z

Page 2

NOTICE

ThiS report was prepared to document work sponsored by the United States
Government. Neither the United States nor ItS agent. the United States Department of
Energy. nor any Federal employees. nor any of their contractors. subcontractors or their
employees. makes any warranty. express or Implied. or assumes any legal liability or
responsloillty for the accuracy. completeness. or usefulness of any information.
apparatus. product or process disclosed. or represents that its use would not Infringe
privately owned rights

Page 62

53

75 1500 RPM

60 • • •
45 • •
30 • .. • ... ...
15 ! ~ ~ ~ = 0 .... ...

co 0 c:: -Q) 75 ::l
a.

I
~ ....

60 <
""::I
Q)
~ 45 ... ::l
VI
ttt
Q) ... :::E: 30 ::i:: '* '* '* ...

15 ~ ~ ~ •
0

0 5 10 15 20 25 30 35

% Methanol by Energy

Fig. 4.5 ~feasured Air-Fuel Ratio as a
Function of Fumigated ~Iethanol .- 1/4 Rack

A- 1/2 Rack
• - 3/4 Rack

~ - Full Rack

Page 63

75 ~.

60 •
45

'"
30 ...

15 ~!

0 1-----
75 ~

0
.p04

60 ~
CIS La
0::

....
45 IU

:::: '" ~ I
~ 30 .p04
<

~,

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IU 15 ~
::::

.. rl
en
C'3
IU 0 ::t: '" .

75 ~

• 60 l-
45 I-

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IS ~!

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o

54

-r • . · 1500 RPM
• • • • ~ .
.&. ... .t.. · - -

!2 I: 5 a [;I -
-

I

1720 RPM-

· - - --- .-: - ... -
A A A ... ·

Wi c: ~ !I ·
·
·

2000 RPM

• • • .. -
·

A .. .. A ·
~ ~ i: ~ ·

-.
10 20 30 40 so

% Ethanol by Energy

Fig. 4.6 Measured Air-Fuel Ratio as a Function of
Fumigated Ethanol

• - 1/4 Rack

~- 1/2 Rack

• - 3/4 Rack

~ - Full Rack

Page 123

1. Report No. 2. Government Accession No.
NASA CR-1679l5

4. Title and Subtitle

FUMIGATION OF ALCOHOL IN A LIGHT DUTY AUTOMOTIVE DIESEL
ENGINE

7. Author(s)

Entezaam M. H Broukhiyan and Samuel S. Lestz

9. Performing Organization Name and Address

Center for Air Environment Studies
The Pennsylvania State University
University Park, Pennsylvania 16802

12. Sponsoring Agency Name and Address

U. S. Department of Energy
Office of Vehicle and Engine R&D
Washington, D. C. 20585

15. Supplementary Notes

3. Recipient's Catalog No.

5. Report Date
August 1981

6. Performing Organization Code

778-38-12

8. Performing Organization Report No.

CAES No. 600-81

10. Work Unit No.

11. Contract or Grant No.

NAG 3-91

13. Type of Report and Period Covered

Contract Report

14. Sponsoring Agency ~EI&- Report No.
DOE/NASA/009l-l

Final report. Prepared under Interagency Agreement DE-AIOl-8lCS50006. Project Manager, Michael
Skorobatckyi, Transportation Propulsion Division, NASA Lewis Research Center, Cleveland, Ohio 44135.

16. Abstract

A light-duty automotive Diesel engine was fumigated with methanol and ethanol in amounts up to 35% and 50%
of the total fuel energy respectively. The main purpose of this study was to determine the effect of alcohol
(methanol and ethanol) fumigation on engine performance at various operating conditions. Engine fuel effi-
ciency, emiSSions, smoke, and the occurrence of severe knock were the parameters used to evaluate per-
formance. Raw exhaust particulate and its soluble organic extract were screened for biological activity us-
ing the Ames Salmonella typhimurium assay. Results are given for a test matrix made up of twelve steady-
state operating conditions. For all conditions except the 1/4 rack (light load) condition, modest thermal ef-
ficiency gains were noted upon ethanol fumigation. Methanol showed the same increase at 3/4 and full rack
(high load) conditions, However, engine roughness or the occurrence of severe knock limited the maximum:
amount of alcohol that could be fumigated. Brake specific NOx concentrations were found to decrease for all
ethanol conditions tested. OXides of nitrogen emissions, on a volume basis, decreased for all alcohol con-
ditions tested. Based on the limited particulate data analyzed, it appears as though ethanol fumigation, like
methanol fumigation, while lowering the mass of particulate emitted, does enhance the biological activity of
that parti cuI ate,

17. Key Words (Suggested by Author(s)) 18. Distribution Statement

Alcohol fuels; Alternative fuels; Diesel engines Unclassified-unlimited
STAR category 28
DOE Category UC-96

19. Security Classif. (of this report)

Unclassified

20. Security Classif. (of this page)

Unclassified

21. No. of Pages

* For sale by the National Technical Information Service, Springfield, Virginia 22161

22. Price"

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