Turbocharged Engine Evacuator System for Vacuum Supply
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle systems require multiple components and are complex and costly due to the need for separate vacuum sources for devices with different suction vacuum and suction flow rate requirements, such as brake boosters and fuel vapor purges.
Innovation Solution
A turbocharged engine air system utilizing two evacuators with multiple suction ports connected to various devices, allowing for adjustable vacuum supply based on operating conditions, reducing the need for multiple vacuum sources by using the engine air system to generate vacuum for multiple devices simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate vacuum sources are used for each device requiring vacuum, then each device can receive appropriate vacuum supply, but the number of parts increases and system complexity increases
Solution Approach 1:
The patent combines multiple vacuum sources into a single integrated evacuator system that can serve multiple devices simultaneously. The evacuator includes multiple suction ports that can be connected to different vacuum-consuming devices, allowing one device to provide vacuum to multiple devices through a unified structure, thereby reducing the total number of components while maintaining reliable vacuum supply to each device.
Solution Approach 2:
The evacuator is designed with multi-functionality to serve multiple vacuum-consuming devices through its multiple suction ports. Each suction port can be selectively connected to different devices such as brake boosters, fuel vapor purges, or other vacuum-requiring components, allowing a single evacuator to perform multiple vacuum supply functions that would otherwise require separate dedicated vacuum sources.
2Reliability
If separate vacuum sources are used for each device requiring vacuum, then each device can receive appropriate vacuum supply, but cost increases
Solution Approach 1:
The patent combines multiple vacuum sources into a single integrated evacuator system that can serve multiple devices simultaneously. The evacuator includes multiple suction ports that can be connected to different vacuum-consuming devices, allowing one device to provide vacuum to multiple devices through a unified structure, thereby reducing the total number of components while maintaining reliable vacuum supply to each device.
3Device complexity
If a single vacuum source is used for multiple devices, then system complexity is reduced, but it becomes difficult to satisfy different suction vacuum and suction flow rate requirements of different devices
Solution Approach 1:
The evacuator is designed with multiple suction ports that can be selectively activated or deactivated based on the specific vacuum requirements of connected devices. Each suction port can be configured to provide appropriate suction characteristics (vacuum level and flow rate) tailored to the specific device it serves, allowing the single evacuator to adapt to different local requirements while maintaining overall system simplicity.
Solution Approach 2:
The evacuator system incorporates dynamic capabilities through selective connection and configuration of its multiple suction ports. The system can dynamically adjust which suction ports are active and how they are configured based on real-time vacuum demands of different devices, enabling adaptability to varying operational requirements while maintaining a simple unified structure.
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
This approach simplifies the system, reduces costs, and effectively provides both high suction vacuum and high suction flow rates to multiple devices within a vehicle, enhancing operational efficiency and reducing component complexity.
Implementation Method 1
a compressor fluidly connected to an intake manifold of an engine
Implementation Method 2
The evacuator may be an ejector or an aspirator, depending on the pressures at the motive and discharge ports. Specifically, if the pressure at the motive port of the evacuator is at atmospheric pressure and if the discharge port is less than atmospheric pressure, then the evacuator may operate as an aspirator. If the pressure at the motive port of the evacuator is greater than atmospheric pressure and the discharge port of the evacuator is less than the pressure at the motive port but at least atmospheric pressure, then the evacuator operates as an ejector. A low pressure region may be created within the evacuator so that air can be drawn from a vacuum reservoir
Data Source
AI summary
A turbocharged engine air system is disclosed. The engine air system includes at least two devices requiring vacuum, a turbocharger having a compressor fluidly connected to an intake manifold of an engine, a first evacuator and a second evacuator. The first evacuator defines a first motive section, a first discharge section, and at least two first suction ports. The first motive section of the first evacuator is fluidly connected to the compressor, and each of the at least two first suction ports are fluidly connected to one of the at least two devices requiring vacuum. The second evacuator defines a second motive section, a second discharge section, and at least two second suction ports. The second motive section of the second evacuator is fluidly connected to at least one of the at least two devices requiring vacuum.