Modular Canister Purge Valve With Integral Check Valves
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing canister purge systems for turbocharged engines require multiple plumbing connections and discrete components to manage pressure differentials, increasing cost and complexity, as they lack a compact and modular solution that integrates check valves and other necessary components.
Innovation Solution
A modular canister purge valve with a removable body that includes check valves and outlet ports, allowing for selective configuration to manage vapor purge flow efficiently across different engine conditions, integrating check valves to control flow based on pressure conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple discrete check valves and plumbing connections are used to manage pressure differentials in turbocharged engines, then the system can reliably control vapor purge flow under various pressure conditions, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple discrete check valves and plumbing connections into a single integrated modular body. The modular body incorporates first and second check valves along with inlet and outlet ports as unified components, eliminating the need for separate plumbing connections and reducing overall system complexity while maintaining the ability to control vapor purge flow under both naturally aspirated and turbocharged conditions
Solution Approach 2:
The modular body serves multiple functions simultaneously: it provides structural housing, integrates check valve mechanisms, defines internal volumes for vapor flow, and provides selectable configurations for different engine types. This multi-functional design allows a single component to replace multiple discrete parts, reducing complexity while maintaining reliability across various operating conditions
2Reliability
If multiple discrete check valves and plumbing connections are used to manage pressure differentials, then the system can protect from purge loss and turbo pressures, but the manufacturing cost increases
Solution Approach 1:
By merging multiple discrete check valves and plumbing components into a single modular body, the patent reduces the total number of parts that need to be manufactured, assembled, and quality-tested. This integration lowers manufacturing costs while maintaining the protective functions against purge loss and turbo pressures through the integrated check valve mechanisms
3Device complexity
If a compact modular design with integrated check valves is used, then the device complexity and manufacturing cost are reduced, but the ability to adapt to different engine conditions may be limited
Solution Approach 1:
The patent employs segmentation by creating a modular body that can be configured in different arrangements suitable for naturally aspirated or turbocharged engines. The modular design allows selective assembly of internal components and ports to match specific engine requirements, maintaining adaptability while reducing overall complexity compared to traditional multi-component systems
Solution Approach 2:
The modular body incorporates selectable configurations that can be adapted to different engine types. The internal volume definitions and check valve arrangements can be selectively configured to provide appropriate vapor purge flow management for either naturally aspirated or turbocharged conditions, ensuring versatility within the simplified modular architecture
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
The modular design reduces plumbing connections, simplifies assembly, and lowers costs by allowing for various configurations with integrated components, providing a compact and efficient solution for managing vapor purge flow in both naturally aspirated and turbocharged engines.
Implementation Method 1
A check valve is disposed in the body and is associated with the at least one outlet port so that under certain conditions, the check valve permits vapor purge flow to flow from the volume through the outlet port and, under different conditions, prevents flow into the volume
Implementation Method 2
A venturi tube or nozzle is used to generate a vacuum on a turbocharged vehicle engine by scavenging from the pressure differential across the turbo (14 psi or more) to drive air through the a venturi nozzle from the turbocharger outlet and back into the turbocharger inlet. The high velocity airflow and sonic shock waves in the venturi nozzle generate a pressure lower than atmospheric (vacuum)
Data Source
AI summary
A canister purge valve for a vehicle includes a valve member constructed and arranged to control vapor purge flow from a fuel tank and canister structure to an air intake manifold. A modular body is removably coupled to a housing of the valve member. The body defines an internal volume in communication with the valve member to receive vapor purge flow. The body includes at least one outlet port. A check valve is disposed in the body and is associated with the at least one outlet port so that under certain conditions, the check valve permits vapor purge flow to flow from the volume through the outlet port and, under different conditions, prevents flow into the volume.