Vehicle PTO Shaft Layout for Covered Chassis Integration

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Solution Overview

Problem

Existing power take-off (PTO) systems for commercial vehicles with covered chassis face challenges in integration, requiring extensive modifications, compromising structural integrity, and failing to adapt to various engine and transmission configurations, while also lacking compatibility with hybrid and electric powertrains.

Innovation Solution

A PTO system with a power take-off drive shaft interwoven through the chassis without modifications, utilizing a clutch, universal joints, and gear boxes to transfer energy from the engine to auxiliary equipment, compatible with both internal and external tools, and adaptable to different vehicle types.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If a PTO system is integrated into a vehicle with covered chassis, then power transfer to auxiliary equipment is enabled, but extensive modifications to the chassis are required

Engineering Contradiction:
Improvepower transfer capabilityVSAvoidinstallation complexity
Core Design Contradiction:
PowerVSEase of manufacture

Solution Approach 1:

The PTO system is divided into separate modular components including a PTO drive shaft, clutch assembly, and power source that can be independently installed and positioned within the vehicle chassis without requiring integrated chassis modifications

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A universal joint is introduced as an intermediary component that enables flexible power transmission between the engine and auxiliary equipment while accommodating the spatial constraints of the covered chassis without requiring structural modifications

Inventive Principle:
Principle #24Intermediary (Mediator)

2Power

If a PTO system is installed in a vehicle with covered chassis, then auxiliary equipment can be powered, but the structural integrity of the chassis is compromised

Engineering Contradiction:
Improvepower transfer capabilityVSAvoidchassis structural integrity
Core Design Contradiction:
PowerVSStrength

Solution Approach 1:

The system uses separate mounting locations for the clutch and power source that utilize existing chassis mounting points and structural elements, avoiding the need to modify or compromise the overall chassis structure

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The PTO drive shaft is designed to utilize the vehicle's existing engine mounting structure and chassis framework for support, allowing the system to serve itself using the vehicle's own structural resources without requiring additional modifications

Inventive Principle:
Principle #25Self-service

3Power

If a PTO system is designed for specific engine configurations, then power transfer efficiency is optimized, but adaptability to different vehicle types is reduced

Engineering Contradiction:
Improvepower transfer efficiencyVSAvoidvehicle type compatibility
Core Design Contradiction:
PowerVSAdaptability or versatility

Solution Approach 1:

The clutch assembly is designed with a universal mounting interface that can be adapted to various engine types and configurations, allowing the same basic PTO system design to be installed on different vehicle models and powertrain types while maintaining efficient power transfer

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The PTO drive shaft incorporates a universal joint that provides dynamic adjustment capability, allowing the shaft to accommodate different angles and positions between the engine and auxiliary equipment across various vehicle configurations while maintaining optimal power transfer efficiency

Inventive Principle:
Principle #15Dynamics

4Reliability

If a PTO system requires extensive modifications, then integration with the vehicle is improved, but installation time and costs increase

Engineering Contradiction:
Improvesystem integrationVSAvoidinstallation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The PTO system components are pre-assembled and pre-configured as a complete kit with all necessary mounting hardware and connections prepared in advance, allowing for rapid installation on the vehicle without requiring time-consuming on-site modifications or assembly steps

Inventive Principle:
Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables efficient power transfer to auxiliary equipment without altering the vehicle's structure, maintaining integrity and compatibility with hybrid and electric powertrains, reducing downtime and costs, and enhancing versatility.

Implementation Method 1

a clutch operatively connected to an engine of the vehicle and adapted to selectively engage with the power take-off drive shaft to transfer energy from the engine to the power take-off drive shaft

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

The power take-off drive shaft may comprise a first drive shaft and a second drive shaft connected by a universal joint. The universal joint may enable the power take-off drive shaft to navigate around existing components of the vehicle.

Methodology Applied
Scientific EffectGimbal: Gimbal

Data Source

PatentUS20250332913A1Vehicle power take off system
Publication Date: 2025.10.30 CF USA LLC
  • US20250332913A1 patent drawing
  • US20250332913A1 patent drawing
  • US20250332913A1 patent drawing

AI summary

The present disclosure provides a power take-off system for a vehicle, comprising a power take-off drive shaft configured to be interwoven through a chassis of the vehicle without modifications to the chassis, wherein the take-off drive shaft is disposed under a vehicle body. The system can include a clutch operatively connected to an engine of the vehicle and adapted to selectively engage with the power take-off drive shaft to transfer energy from the engine to the power take-off drive shaft. A power source can be attached to the power take-off drive shaft and adapted to operate with rotational energy provided by the power take-off drive shaft. The power take-off system can be configured to be installed on the vehicle without modifications to existing components or chassis of the vehicle.