Coursecode: wb4408A
Coursename: Diesel engines A
ECTS creditpoints: 4 |
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Faculty of
Mechanical Engineering and Marine Technology |
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Lecturer(s): Stapersma, prof. D., MSc, FIMarE. |
Tel.: +31
15 27 83051 |
Catalog data:
Thermodynamic principles, performance, Seiliger process, air swallow capacity,
turbocharging, matching of turbocharger, off-design performance |
Courseyear: MSc
1st year
Language: English on request
Semester: 1A / 1B
Hours p/w: 2
Other hours: -
Assessment: See remarks
Assessm.period(s): 1B, 2A
(see academic calendar) |
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Prerequisites:
wb1224 |
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Follow up: wb4408B |
Detailed
description of topics:
- Performance, introduction
- fuel economy and power density - data and general
principles of modern diesel engines - important design trends made clear by using the
ideal Seiliger process
Thermodynamic principles - recapitulation of engineering thermodynamics -
formulation of the 1st and 2nd law for general open/closed system -- the polytropic
process: heat loss versus irreversibilities -
Thermodynamic analysis of the diesel engine - realistic Seiliger process
Air swallow capacity - filling efficiency - air swallow capacity of 2- and 4-stroke
engines
Turbocharging - mechanical charging versus exhaust driven turbocharger - constant
pressure versus pulse system - turbocharging, explained in P-V and T-S diagram -
principles of interaction between the turbocharger and the engine - off-design performance
of a turbocharged diesel engine - "waste gate" and Variable Turbine Geometry
(VTG) - on/off switching of parallel groups of turbochargers - two-stage turbocharging
Modelling - classification of diesel engine simulation models - physical balances -
blockdiagram of engine + turbocharger.
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Course
material:
D. Stapersma, "Diesel engines I: Performance analysis and turbocharging"
D. Stapersma, "Diesel engines annex thermodynamic & chemical principles"
D. Stapersma, "Diesel engines II: Turbocharging"
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References from
literature: |
Remarks
(specific information about assessment, entry requirements, etc.):
Assessment: exercise problems concluded by a discussion. |
Goals:
The student must be able to:
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describe the
technical and economical importance of the diesel engine relative to
other energy generating installations
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describe the complexity and
interdependency of the main performance parameters of a diesel engine
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describe the thermodynamic
processes in the diesel engine, both in the cylinder and in the
turbocharger
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describe the principles of a
turbocharger to increase the power density of the engine and as an
example of direct waste heat usage
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indicate the
complex interaction between engine and turbocharger at part load
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Computer use:
Limited; the course is woven around a computer aided cycle analysis program of the
diesel engine process. It also provides a basis for doing advanced simulations. The
exercise can be solved either by hand or with the help of a computer. |
Laboratory
project(s):
Measurements on an engine with a turbocharger |
Design content:
Limited; assessment of the design parameters governing the performance of the engine.
No extensive treatment of constructional details of the engine. |
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Percentage of
design: 25% |