A six-cylinder, four-stroke cycle SI engine with multipoint fuel injection has a displace- ment of 204 liters and a volumetric efficiency of 87% at 3000 RPM, and operates on ethyl alcohol with an equivalence ratio of 1.06. Each cylinder has one port injector which delivers fuel at a rate of 0.02 kg/sec. The engine also has an auxiliary injector upstream in the intake manifold which delivers fuel at a rate of 0.003 kg/sec to change the air-fuel ratio and give a richer mixture when needed. When in use, the auxiliary injector operates continuously and supplies all cylinders. Calculate: (a) Time of one injection pulse for one cylinder for one cycle. [sec] (b) AF if the auxiliary injector is not being used. (c) AF if the auxiliary injector is being used.
A six-cylinder, four-stroke cycle SI engine with multipoint fuel injection has a displace- ment of 204 liters and a volumetric efficiency of 87% at 3000 RPM, and operates on ethyl alcohol with an equivalence ratio of 1.06. Each cylinder has one port injector which delivers fuel at a rate of 0.02 kg/sec. The engine also has an auxiliary injector upstream in the intake manifold which delivers fuel at a rate of 0.003 kg/sec to change the air-fuel ratio and give a richer mixture when needed. When in use, the auxiliary injector operates continuously and supplies all cylinders. Calculate: (a) Time of one injection pulse for one cylinder for one cycle. [sec] (b) AF if the auxiliary injector is not being used. (c) AF if the auxiliary injector is being used.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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![A six-cylinder, four-stroke cycle SI engine with multipoint fuel injection has a displace-
ment of 204 liters and a volumetric efficiency of 87% at 3000 RPM, and operates on
ethyl alcohol with an equivalence ratio of 1.06. Each cylinder has one port injector
which delivers fuel at a rate of 0.02 kg/sec. The engine also has an auxiliary injector
upstream in the intake manifold which delivers fuel at a rate of 0.003 kg/sec to change
the air-fuel ratio and give a richer mixture when needed. When in use, the auxiliary
injector operates continuously and supplies all cylinders.
Calculate: (a) Time of one injection pulse for one cylinder for one cycle. [sec]
(b) AF if the auxiliary injector is not being used.
(c) AF if the auxiliary injector is being used.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F95cca4f8-148d-4261-8835-d645f64e2c49%2Fc82adda9-8da4-4eca-8077-4d390c50ff0a%2Fx87k6sr_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A six-cylinder, four-stroke cycle SI engine with multipoint fuel injection has a displace-
ment of 204 liters and a volumetric efficiency of 87% at 3000 RPM, and operates on
ethyl alcohol with an equivalence ratio of 1.06. Each cylinder has one port injector
which delivers fuel at a rate of 0.02 kg/sec. The engine also has an auxiliary injector
upstream in the intake manifold which delivers fuel at a rate of 0.003 kg/sec to change
the air-fuel ratio and give a richer mixture when needed. When in use, the auxiliary
injector operates continuously and supplies all cylinders.
Calculate: (a) Time of one injection pulse for one cylinder for one cycle. [sec]
(b) AF if the auxiliary injector is not being used.
(c) AF if the auxiliary injector is being used.
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