Thermal calculation of VAZ-2107 engine

Contents

Task

Brief technical characteristics of VAZ engine

Thermal calculation of the engine

Working Medium Settings

Environmental and residual gas parameters

Intake Process

Compression Process

Combustion process

Expansion Process

Indicator parameters of engine operating cycle

Efficient engine performance

Main cylinder dimensions and specific engine parameters

Building an Indicator Chart

Kinematic calculation of crank mechanism

Dynamic engine calculation

Calculation of dynamic masses

Calculation Example for Crankshaft Rotation? =

Literature

Applications

1. Brief technical characteristics of VAZ engine - 2107

Engine type - carburetor, 4-stroke, in-line.

Number of cylinders: i = 4.

Procedure: 1-3-4-2

Cylinder diameter: D = 79 mm

Piston stroke: S = 80 mm

Engine displacement: (Vh⋅i) = 1.57 dm3.

Compression ratio: eq = 8.5.

Rated engine power: Nn = 54.4 kW

Rated speed: nn = 5000 min-1

Initial fuel - gasoline AI92 (GOST 208477)

For him:

Lower specific heat of fuel combustion:

Average elemental composition: C = 0.855; H = 0.145; μT = 115 kg/Kmol

Kinematic calculation of engine

The kinematic calculation assumes that the crankshaft rotates at a constant angular velocity ([omega] = const).

Let's take a calculation example for 10 ° crankshaft rotation.