32. Crank

Figure 32.1 Crank example

RecurDyn/Crank consists of system builder, geometries, and connecting elements. The user can create crank system easily using system builder. Geometries such as engine block, crankshaft, conrod, piston pin, piston, flywheel, torsional damper, balancing shaft and EDT can be created. Geometries are connected by connecting elements such as bearing, engine mount, liner connector, gas force, and Balancing Screw Coupler.

After setting up a Pre-Global data and Global data, the user can create components to structure Crank System using two kinds of method. One is System Builder which is a method using Component Builder. In the Component Builder dialog page, the user can create components by selecting the geometries and connecting elements the user needs to create. The other is Manual Builder, which is a method to create components by clicking component icon one by one in RecurDyn/Crank.

Step to Run Crank System

1. Define a pre-global data of an engine.

2. Define a global data of an engine.

3. Select geometries and connecting elements at Component Builder.

4. Define values of selected geometries and connecting elements.

5. Build up an engine model by clicking OK.

6. Run the simulation.

• 32.1. System Builder
  • 32.1.1. Step to define Global Data
    • 32.1.1.1. Cylinder Layout
      • 32.1.1.1.1. An example of calculation procedure of Cylinder Layout Parameters
  • 32.1.2. System Component Builder
• 32.2. Geometric Entities
  • 32.2.1. Engine Block
    • 32.2.1.1. Modeling Options
    • 32.2.1.2. Properties
  • 32.2.2. CrankShaft
    • 32.2.2.1. Modeling Options
    • 32.2.2.2. Properties
      • 32.2.2.2.1. Crank Shaft Type
      • 32.2.2.2.2. Layout Definition
      • 32.2.2.2.3. Web Layout
      • 32.2.2.2.4. Shaft Section Definition
  • 32.2.3. Connecting Rod
    • 32.2.3.1. Modeling Options
    • 32.2.3.2. Properties
  • 32.2.4. Piston
    • 32.2.4.1. Modeling Options
    • 32.2.4.2. Properties
  • 32.2.5. Piston Pin
    • 32.2.5.1. Modeling Options
    • 32.2.5.2. Properties
  • 32.2.6. FlyWheel
    • 32.2.6.1. Modeling Options
    • 32.2.6.2. Properties
  • 32.2.7. Torsional Damper
    • 32.2.7.1. Modeling Options
    • 32.2.7.2. Properties
  • 32.2.8. Balancing Shaft
    • 32.2.8.1. Modeling Options
    • 32.2.8.2. Properties
  • 32.2.9. E.D.T(Equivalent Drive Train)
    • 32.2.9.1. Modeling Options
• 32.3. Connecting Entities
  • 32.3.1. Bearing
    • 32.3.1.1. Bushing Bearing
      • 32.3.1.1.1. Modeling Options
      • 32.3.1.1.2. Properties
    • 32.3.1.2. EHD Bearing
      • 32.3.1.2.1. Modeling Options
      • 32.3.1.2.2. Properties
    • 32.3.1.3. Constraint Bearing
      • 32.3.1.3.1. Modeling Options
      • 32.3.1.3.2. Properties
    • 32.3.1.4. Ball Bearing
  • 32.3.2. Piston Liner Connector
    • 32.3.2.1. Modeling Options
    • 32.3.2.2. Properties
      • 32.3.2.2.1. Constraint Type of Liner connector
      • 32.3.2.2.2. Cylinder Contact Type of Liner Connector
      • 32.3.2.2.3. Surface Contact Type of Liner Connector
  • 32.3.3. Piston Lubrication
  • 32.3.4. Gas Force
    • 32.3.4.1. Modeling Options
    • 32.3.4.2. Properties
  • 32.3.5. Balancing Screw Coupler
    • 32.3.5.1. Modeling Options
    • 32.3.5.2. Properties
• 32.4. CCMAV (Torque Control of Constant Mean Angular Velocity of a Crank-Shaft)
  • 32.4.1. Modeling Options
  • 32.4.2. Properties
    • 32.4.2.1. Parametric Value List about CCMAV
• 32.5. Contact Entities
  • 32.5.1. Rigid To RFlex Contact
    • 32.5.1.1. Modeling Options
    • 32.5.1.2. Properties
  • 32.5.2. RFlex To RFlex Contact
    • 32.5.2.1. Modeling Options
    • 32.5.2.2. Properties