WOLFRAM SYSTEMMODELER

Engine1b

Model of one cylinder engine with gas force and preparation for assembly joint JointRRP

Diagram

Wolfram Language

In[1]:=
SystemModel["Modelica.Mechanics.MultiBody.Examples.Loops.Engine1b"]
Out[1]:=

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

This is a model of the mechanical part of one cylinder of an engine. It is similar to Loops.Engine1a. The difference is that a simple model for the gas force in the cylinder is added and that the model is restructured in such a way, that the central part of the planar kinematic loop can be easily replaced by the assembly joint "Modelica.Mechanics.MultiBody.Joints.Assemblies.JointRRP". This exchange of the kinematic loop is shown in Loops.Engine1b_analytic. The advantage of using JointRRP is, that the non-linear algebraic equation of this loop is solved analytically, and not numerically as in this model (Engine1b).

An animation of this example is shown in the figure below.

model Examples.Loops.Engine

Components (17)

Piston

Type: BodyCylinder

Rod2

Type: BodyBox

Bearing

Type: Revolute

world

Type: World

Inertia

Type: Inertia

Crank4

Type: BodyBox

Crank3

Type: BodyCylinder

Crank1

Type: BodyCylinder

Crank2

Type: BodyBox

Mid

Type: FixedTranslation

cylPosition

Type: FixedTranslation

gasForce

Type: GasForce2

B2

Type: RevolutePlanarLoopConstraint

B1

Type: Revolute

Cylinder

Type: Prismatic

Rod1

Type: FixedTranslation

Rod3

Type: FixedTranslation