moteur thermique mecanique

Module Engine With All the Details of the Engine Cycle Times

Module of the heat engine with all details the engine cycle times

The heat engine

Definition

Functional analysis

Structural analysis

Internal engine characteristics

Unit displacement

4 -stroke cycle of an ignition engine ordered

Description of the thermodynamic cycle

1st time: admission

2nd time: compression

3rd time: Relaxation combustion

4th time: exhaust

Characteristics of an internal combustion engine

Motor torque

The average couple

The power of an engine

Specific consumption of an engine

Quantification of physical phenomena

Game in internal combustion engines

Mass consumption of theoretical air of a 4 -stroke engine

Air / fuel ratio

Theoretical thermal power released by combustion

Volumetric yield

Combustion yield

Theoretical cycle thermal yield

Formal yield (real engine cycle)

Mechanical yield

Engine machine repair technician

diesel engine

breakdown

Admission: gas inertia increasing with the speed of

engine rotation is responsible for filling

incomplete cylinder.

Compression: compression is not adiabatic. Because

from heat communication to walls, pressure

Gas is slower than in adiabatic law.

Combustion: combustion of the air/petrol mixture is not

not instantaneous at the PMH hence a combustion zone

Rounded on the diagram.

Relaxation: the relaxation of burned gases is not adiabatic because

The gases give in part of their heat to the walls.

Exhaust: at the end of relaxation, the gas pressure is

significantly higher than atmospheric pressure.

Thermal engines transform heat into mechanical work intended to balance the work

resistant from a moving vehicle.

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Automobile mechanics

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Auto mechanics

Automobile mechanics

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