- Docente: Davide Moro
- Credits: 6
- SSD: ING-IND/08
- Language: Italian
- Teaching Mode: Traditional lectures
- Campus: Forli
- Corso: Second cycle degree programme (LM) in Mechanical Engineering (cod. 8202)
Learning outcomes
The student learns the specific issues relating to the operation and modeling of internal combustion engines, both spark and compression ignition.
Course contents
Development of a zero-dimensional model for an internal combustion
engine: evaluation of the trend of the main termo-dynamic
quantities inside the cycle and of the performance in terms of
torque, power, cylinder filling and fuel compsunction.
Characteristic curves at full and partial load: comparison between
spark ignition and spontaneous ignition engines. Reduction of the
zero-dimensional model to obtain a real-time simulator of the
engine behaviour.
Gasoline feeding in spark-ignition engines: an outline on
carburettor systems, architecture of the electronic injection
systems and the speed-density, (a,N) and MAF methodologies for the
estimation of the air mass required by the engine. Air fuel ratio
close loop control by means of the lambda sensor. Stoichiometric
air fuel ratio control during throttle transient. Compensation of
the fuel deposition on the ducts wall: the fluid film Aquino model.
The Drive-by-Wire systems. Knock and emission control.
Compression ignition engines: evolution of the injection system for
compression ignition engines (single injection pump, single pump
with distributor, injector unit and common rail systems). Emission
control in compression ignition engines.
Two stroke engines and dynamic and volumetric supercharging.
Stratified or homogeneous charge direct injection spark ignition
engines: performance comparison. Un-throttled spark ignition
engines.
Outline on gasoline and Diesel homogeneous combustion
compression ignition engines (HCCI).
Readings/Bibliography
The didactic material will be give to the student by the teacher
Teaching methods
Lectures and use of computer projection.
Assessment methods
The examination consists of an oral colloquium.
Teaching tools
In the course will be shown in detail the development of a zero-dimensional thermodynamic engine simulation code, from which a real time simulation code will be extracted and utilized for the description of the basic functions of injection control in an SI engine.
The projection from a laptop computer will be used for a description and analysis of results obtained by the models developed.
Office hours
See the website of Davide Moro