35. HAT

Figure 35.1 HAT example

The hydraulic auto tensioner consists of following bodies:

• Cylinder

• Plunger

• Check ball.

The spring and damping force of the plunger relative to the cylinder balance the cylinder and check ball.

• The spring force is built up by the spring preload and the spring rate multiplied by the spring displacement.

• The damping force is a friction force and a hydraulic force that is proportional to the relative velocity of the plunger and cylinder.

• 35.1. HAT Type A
  • 35.1.1. Modeling Options
  • 35.1.2. Properties
    • 35.1.2.1. Pressure in Chamber
      • 35.1.2.1.1. Pressure Chamber Volume Change Rate
      • 35.1.2.1.2. The Oil Flow through the Check Valve
      • 35.1.2.1.3. The Oil Flow through the Leakage Gap
      • 35.1.2.1.4. Bulk Modules
    • 35.1.2.2. Hydraulic Force
• 35.2. HAT Type B
  • 35.2.1. Modeling Options
  • 35.2.2. Properties
    • 35.2.2.1. Pressure in Chamber
      • 35.2.2.1.1. Pressure Chamber Volume Change Rate
      • 35.2.2.1.2. The Oil Flow through the Check Valve
      • 35.2.2.1.3. The Oil Flow through the Leakage Gap
      • 35.2.2.1.4. The oil Flow through the Relief Valve
      • 35.2.2.1.5. Bulk Modules
    • 35.2.2.2. Hydraulic Force