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Diesel Engine Fuel System

Course developer

Course abstract

The course provides knowledge of the working principle of compression ignition piston engines and of factors affecting the efficiency of the energy conversion process. Students learn practical skills in calculating thermodynamic parameters and analyzing engine operating cycles. The course also provides knowledge of the types of diesel fuel supply systems, their design features and their basic operational principles. The course provides skills to analyse and eliminate potential causes of deviations of the diesel engine parameters from technical regulations

Learning outcomes and their assessment

Knowledge: the principle of the work of compression piston engines and the factors affecting the efficiency of the energy transformation process. Design and operational principles for diesel power systems. 3 quizzes.
Skills: calculation of thermodynamic parameters and analysis of engine operating cycles. Checking and assessing the state of the diesel power system. 2 home works.
Competence: to choose and justify a more suitable diesel engine technology with a more suitable fuel-feeding system; to deal independently with technical issues to ensure that diesel-powered fuel systems are operated without defects. 8 lab works.

Course Content(Calendar)

1. History of development of the diesel engines. Performance parameters of reciprocating engines. (Lecture 1 h) Homework. Quiz.
2. The ideal gas cycle of the reciprocating engines with a constant volume of heat supply. (Lecture 1 h)
3. The ideal gas cycle of the reciprocating engines with a heat supply at constant pressure. (Lecture 1 h) Quiz
4. Requirements for thermal efficiency of the ideal gas cycles for reciprocating engines. (Lecture 1 h)
5. Calculation of parameters describing the ideal gas cycle for reciprocating engines. (Lecture 1 h) Homework
6. The working principle of the diesel engine. (Lecture 1 h)
7. The process of combustion in the diesel engine and its characteristics. (Lecture 1 h)
8. Calculation of the fuel flow through the nozzle. (Lecture 1 h)
9. Types of diesel power systems and their comparative assessment. (Lecture 1 h)
10. Low pressure part of the fuel supply system. Types of fuel filtering filters, their design. (Lecture 1 h, Laboratory work 2 h)
11. Design, breakdown, operational principles of nozzles and injectors. (Lecture 1 h, Laboratory work 2 h).
12. Nozzle performance testing devices and stands. Testing and regulating technologies for nozzles and injectors. (Lecture 1 h, Laboratory work 2 h).
13. Design, operation, and adjustment of the in-line pump. Design of high-pressure pump test stands. (Laboratory work 2 h).
14. Design, operation, and adjustment of the distribution pump. (Lecture 1 h, Laboratory work 2 h).
15. Pump-nozzle design and operation. (Lecture 1 h, Laboratory work 2 h)
16. Common rail system, components, and working principle. (Lecture 1 h, Laboratory work 4 h)
17. Faults of diesel fuel supply systems, their potential causes and fault prevention methods. (Lecture 1 h) Quiz

Requirements for awarding credit points

Course assessment with a grade is formed follows:
• 2 homeworks (30%)
• 8 laboratory works (30%)
• 3 quizzes (40%)
Credit points are assigned if the rate weighted average score is at least grade 4

Description of the organization and tasks of students’ independent work

Students must solve three homework tasks independently. Students should prepare themselves for quizzes about lectures.

Criteria for Evaluating Learning Outcomes

The grade is formed as the weighted mean of the results of homework, lab tasks and the quiz.

Compulsory reading

Heywood, J. B., Internal Combustion Engine Fundamentals, 2nd edition. McGraw-Hill, 2018. 1028 p.

Further reading

Aizsils G., Dīzeļmotoru barošanas sistēmas. Jelgava: 2008. 202 lpp.

Periodicals and other sources

1. http://www.abs.msk.ru
2. BOSCH. Nozzles and nozzle-holder parts. 2003/2004 (Sprauslu smidzinātāju katalogs, institūtā)
3. http://www.autodata.ru

Notes

Arbitrary choice course for students of the 2nd level professional higher education study program "Machine Design and Manufacturing" and 2nd level academical higher education study program "Agricultural Engineering