Discuss how the (Cetane & Octane ) numbers are affected by the following engine parameters: A. 1) Ignition delay 2) Method of injection 3) Engine Design 4) Compression ratio 5) Type of ignition 6) Flame speed B. Discuss Why? 1) The two-stroke cycle engine must always have an intake pressure boost. 2) In compression ignition engines, no fuel is added to the incoming air, so that compression is done on air only.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A. Discuss how the (Cetane &
Octane ) numbers are affected by the
following engine parameters:
А.
1) Ignition delay
2) Method of injection
3) Engine Design
4) Compression ratio
5) Type of ignition
6) Flame speed
В.
Discuss Why?
1) The two-stroke cycle engine
must always have an intake pressure
boost.
2) In compression ignition engines,
no fuel is added to the incoming air,
so that compression is done on air
only.
3) In two- stroke SI engines,
scavenging lasts until piston passes
BDC and closes intake and exhaust
ports.
4) In Dual cycle, combustion occurs
once at constant volume and
continued at constant pressure.
Transcribed Image Text:A. Discuss how the (Cetane & Octane ) numbers are affected by the following engine parameters: А. 1) Ignition delay 2) Method of injection 3) Engine Design 4) Compression ratio 5) Type of ignition 6) Flame speed В. Discuss Why? 1) The two-stroke cycle engine must always have an intake pressure boost. 2) In compression ignition engines, no fuel is added to the incoming air, so that compression is done on air only. 3) In two- stroke SI engines, scavenging lasts until piston passes BDC and closes intake and exhaust ports. 4) In Dual cycle, combustion occurs once at constant volume and continued at constant pressure.
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