---
title: "Reservoir"
industry: "Motor Vehicle Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:RESERVOIR"
  data_integrity_hash: "572174e2da90be58320540a7d6b589c6"
  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:RESERVOIR"
  data_source_uri: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/reservoir.md"
  official_resource_url: "https://cnfx.com/industry/motor-vehicle-manufacturing/product/reservoir"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-10.0 bar"
    unit: "ml"
engineering_limits:
  max_safe_operating_point:
    value: 15.0
    unit: "bar"
    consequence: "Yield strength of polyethylene terephthalate (PET) reservoir material (55 MPa) exceeded at 15.0 bar internal pressure, causing permanent plastic deformation and potential rupture"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Brake fluid glycol ether absorption exceeding 3.0% by volume"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement multilayer coextrusion with ethylene vinyl alcohol (EVOH) barrier layer (oxygen transmission rate &lt;0.1 cm³/m²/day at 23°C)"
  - node_2:
      trigger: "Cyclic pressure fluctuation at 2.0 Hz with amplitude &gt;5.0 bar"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Redesign with radiused gate transitions (minimum 2.0 mm radius) and glass fiber reinforcement (30% by weight)"
bom_nodes:
  reservoir-cap:
    type: "component"
    urn: "URN:CNFX:ME:RESERVOIR_CAP"
    interface_type: "physical-logic-coupled"
  fluid-level-sensor:
    type: "part"
    urn: "URN:CNFX:ME:FLUID_LEVEL_SENSOR"
    interface_type: "physical-logic-coupled"
  mounting-bracket:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_BRACKET"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 11439:2013 (GAS CYLINDERS - HIGH PRESSURE CYLINDERS FOR THE ON-BOARD STORAGE OF NATURAL GAS AS A FUEL FOR AUTOMOTIVE VEHICLES)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/motor-vehicle-manufacturing/product/reservoir.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a89f7c4c0516e977e27450f3f077f7e8ff2272a09af9b40941fe970345947cc8"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Reservoir

## 1. Technical Definition
A container that stores brake fluid for the brake master cylinder system.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-10.0 bar**. Failure boundary: **15.0 bar internal pressure**, Mechanism: **Yield strength of polyethylene terephthalate (PET) reservoir material (55 MPa) exceeded at 15.0 bar internal pressure, causing permanent plastic deformation and potential rupture**.

### 2.1 Analytical Physics Model
Governed by the **Darcy-Weisbach Pressure Drop**:

> **Primary Equation**: $\Delta P = f \cdot \frac{L}{D} \cdot \frac{\rho v^2}{2}$  
> **Engineering Impact**: Critical for sizing CIP (Clean-In-Place) pump heads.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| f | Friction Factor | Engineering Constant |
| L | Pipe Length | Engineering Constant |
| v | Velocity | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Brake fluid glycol ether absorption exceeding 3.0% by volume | 8 | Reservoir wall swelling and dimensional instability | Implement multilayer coextrusion with ethylene vinyl alcohol (EVOH) barrier layer (oxygen transmission rate &lt;0.1 cm³/m²/day at 23°C) |
| Cyclic pressure fluctuation at 2.0 Hz with amplitude &gt;5.0 bar | 8 | High-cycle fatigue crack initiation at injection molding gate locations | Redesign with radiused gate transitions (minimum 2.0 mm radius) and glass fiber reinforcement (30% by weight) |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Fluid Level Sensor](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/fluid-level-sensor.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Injection Molding Machine**, **Industrial Chiller**, **Hopper Dryer**  
**Downstream Applications**: Brake Master Cylinder Assembly, Automotive Brake System, Complete Motor Vehicle  

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

### Q: What materials are used in manufacturing this brake fluid reservoir?
**A**: This reservoir is constructed from durable materials including polypropylene, nylon, and polyethylene, ensuring chemical resistance and long-term reliability in automotive brake systems.

### Q: What components are included in the brake fluid reservoir BOM?
**A**: The bill of materials includes a fluid level sensor for monitoring brake fluid levels, a mounting bracket for secure installation, and a reservoir cap to prevent contamination and evaporation.

### Q: How does this reservoir integrate with the brake master cylinder system?
**A**: This reservoir stores and supplies brake fluid to the master cylinder, maintaining proper hydraulic pressure for responsive braking. The fluid level sensor alerts drivers when fluid needs replenishment.

## 6. Manufacturing Compliance
- ISO 11439:2013 (GAS CYLINDERS - HIGH PRESSURE CYLINDERS FOR THE ON-BOARD STORAGE OF NATURAL GAS AS A FUEL FOR AUTOMOTIVE VEHICLES)

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

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: RESERVOIR | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 26967d78
