---
title: "Clutch Pack"
industry: "Motor Vehicle Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:CLUTCH_PACK"
  data_integrity_hash: "fcf3ebec9fbadc7167e476c725470235"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:CLUTCH_PACK"
  data_source_uri: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/clutch-pack.md"
  official_resource_url: "https://cnfx.com/industry/motor-vehicle-manufacturing/product/clutch-pack"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.8-1.2 MPa hydraulic pressure, 80-120°C operating temperature, 0.1-0.3 mm plate clearance"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 1.5
    unit: "MPa"
    consequence: "Amontons-Coulomb friction law breakdown at 150°C causes coefficient drop from μ=0.12 to μ=0.04, Hertzian contact stress exceeding 800 MPa yields steel plates"
fmea_matrix_quantitative:
  - node_1:
      trigger: "ATF degradation below JASO 1A specification (kinematic viscosity &lt;5.5 cSt at 100°C)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate in-line viscometer with 0.1 cSt resolution and automatic bypass to auxiliary cooler"
  - node_2:
      trigger: "Piston seal leakage exceeding 15 mL/min at 1 MPa differential pressure"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dual-lip fluorocarbon seals with 0.05 mm radial interference and laser-welded retainer rings"
bom_nodes:
  friction-plates:
    type: "component"
    urn: "URN:CNFX:ME:FRICTION_PLATES"
    interface_type: "physical-logic-coupled"
  steel-separator-plates:
    type: "component"
    urn: "URN:CNFX:ME:STEEL_SEPARATOR_PLATES"
    interface_type: "physical-logic-coupled"
  clutch-piston:
    type: "component"
    urn: "URN:CNFX:ME:CLUTCH_PISTON"
    interface_type: "physical-logic-coupled"
  return-springs:
    type: "component"
    urn: "URN:CNFX:ME:RETURN_SPRINGS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/clutch-pack.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "70b8f451835188b8da8a788478d54a267722b978d30a6af6c4d612cbe5d7b77b"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Clutch Pack

## 1. Technical Definition
A multi-plate friction assembly within an automatic transmission that engages and disengages power flow between rotating components.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.8-1.2 MPa hydraulic pressure, 80-120°C operating temperature, 0.1-0.3 mm plate clearance**. Failure boundary: **1.5 MPa hydraulic pressure causes seal rupture, 150°C temperature initiates thermal glazing, 0.5 mm clearance induces chatter vibration**, Mechanism: **Amontons-Coulomb friction law breakdown at 150°C causes coefficient drop from μ=0.12 to μ=0.04, Hertzian contact stress exceeding 800 MPa yields steel plates**.

### 2.1 Analytical Physics Model
Governed by the **L10 Bearing Life & Fatigue Model**:

> **Primary Equation**: $L_{10} = (\frac{C}{P})^p$  
> **Engineering Impact**: Predicts mechanical lifecycle before component fatigue.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| C | Dynamic Load Rating | Engineering Constant |
| P | Equivalent Dynamic Load | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| ATF degradation below JASO 1A specification (kinematic viscosity &lt;5.5 cSt at 100°C) | 8 | Plate adhesion and torque transfer failure during 2-3 shift transition | Integrate in-line viscometer with 0.1 cSt resolution and automatic bypass to auxiliary cooler |
| Piston seal leakage exceeding 15 mL/min at 1 MPa differential pressure | 8 | Incomplete clutch pack engagement causing 300-500 rpm slip during lockup phase | Dual-lip fluorocarbon seals with 0.05 mm radial interference and laser-welded retainer rings |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Hydraulic Press**, **Heat Treatment Furnace**, **Surface Grinding Machine**  
**Downstream Applications**: Automatic Transmission Assembly, Dual-Clutch Transmission Assembly, Continuously Variable Transmission Assembly  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What is the primary function of a clutch pack in automatic transmissions?
**A**: A clutch pack engages and disengages power flow between rotating components within an automatic transmission, enabling smooth gear shifts and torque transfer.

### Q: Why are sintered bronze/copper materials used for friction plates?
**A**: Sintered bronze/copper friction materials provide excellent heat dissipation, consistent friction coefficients, and durability under high-pressure conditions in transmission systems.

### Q: How do high-carbon steel separator plates improve clutch pack performance?
**A**: High-carbon steel separator plates offer superior strength and wear resistance, maintaining precise plate alignment and preventing deformation during repeated engagement cycles.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Clutch Pack](https://cnfx.com/industry/motor-vehicle-manufacturing/product/clutch-pack)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: CLUTCH_PACK | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: e4305084
