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Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca 2010 - Road vehicle and engine engineering science 1.Combustion engines main.

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Presentation on theme: "Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca 2010 - Road vehicle and engine engineering science 1.Combustion engines main."— Presentation transcript:

1 Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca Road vehicle and engine engineering science 1.Combustion engines main principles and definitions 2.Reciprocating combustion engines architecture 3.Reciprocating engines dynamic properties 4.Engine components and systems 5.The engine management system for gasoline and Diesel engines 6.The emission Requirements & Technology 7.Engine vehicle integration 7.1 Engine layout and mounting 7.2 Engine-vehicle cooling system 7.3 Intake system 7.4 Exhaust system

2 Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca Road vehicle and engine engineering science 2 The main function of an engine intake system is to deliver combustion air to the engine. To condition the air, just particulate removal, to protect engine parts from airborne impurities (dirt and other particulate matter). To reduce noise transmitted from the engine intake. To give a positive contribution to the engine performance Main functions Composition The intake snorkel (opening for the intake air to enter the system) Tube leading to the air filter (dirty air line) Air filter Tube leading to the engine (clean air line) Air mass flow meter Throttle body Resonator (silencer) to minimize the noise entering the cabin Blow by inlet

3 Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca Road vehicle and engine engineering science snorkel Dirty air Filter box Air filter Clean air Typical engine intake system

4 Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca Road vehicle and engine engineering science Sizing for intake noise reduction 5.0 ¸ 5.5 l/l of engine displacement Resonator Filter volume function of Technology / costy Mean air flow rate (depending on engine diaplacement) Airborn impurity (vehicle mission) Replacemnet interval Intake system main design guidelines

5 Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca Road vehicle and engine engineering science Example of the relation among filtering surface, dust concentration and service interval (air flow rate 220 m 3 /h) Intake system main design guidelines

6 Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca Road vehicle and engine engineering science Engine on-board air filter

7 Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca Road vehicle and engine engineering science Example of vehicle on-board air filter

8 Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca Road vehicle and engine engineering science Example of vehicle on-board air filter for a diesel engine

9 Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca Road vehicle and engine engineering science Theoretical effect of the charge air pressure in the intake manifold on the engine maximum output motore Intake line pressure drop minimization

10 Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca Road vehicle and engine engineering science Various component effect on the engine torque and volumetric efficiency The air charge optimization

11 Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca Road vehicle and engine engineering science Intake opening point (snorkel) positioned just below the left front lights) Snorkel positioning

12 Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca Road vehicle and engine engineering science Intake opening point (snorkel) positioned on the vehicle front end outside the engine compartment (fresh and dynamic air)) Snorkel positioning

13 Engine Vehicle Integration – Intake system Scuola di Dottorato di Ricerca Road vehicle and engine engineering science Air mass flow meter positioning Flange-hose installation blow-by inlet connection Compressor inlet Flow meter Air filter Mass flow meter positioning Air mass flow meter positioning Hose-hose installation


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