Injector Bracket Assembly for Tight Exhaust Packaging
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Solution Overview
Problem
The challenge of positioning injectors in vehicles with diesel engines near SCR and DPF canisters without obstructing or damaging exhaust components during installation, due to packaging constraints and obscure preferred locations.
Innovation Solution
A bracket assembly comprising a first bracket attached to a vehicle frame cross-beam and a second bracket supporting the injector, with heat shielding and rigid arms for secure attachment, allowing the injector to be positioned without obstructing exhaust component installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the injector is mounted at the desired location proximate the SCR canister and DPF canister, then the injector positioning is optimized for function, but the installation of exhaust components is obstructed or the injector is damaged
Solution Approach 1:
The mounting system is divided into separate components: a first bracket attached to the vehicle frame, a second bracket supporting the injector, and a heat shield. This segmentation allows each component to be installed independently at different times, enabling the exhaust component to be installed first, followed by the injector mounting, thus avoiding interference during installation while achieving precise final positioning
Solution Approach 2:
The first bracket is attached to the vehicle frame in advance, creating a pre-positioned mounting structure. This preliminary action establishes the mounting location before the exhaust component is installed, allowing the exhaust component to be installed without obstruction, and then the injector can be precisely positioned on the pre-installed bracket structure
2Volume of moving object
If the injector is positioned very close to the exhaust component, then the packaging envelope is optimized, but the injector can be damaged or inhibit installation of the exhaust component
Solution Approach 1:
The mounting system is segmented into a first bracket attached to the frame, a second bracket for the injector, and a heat shield. This segmentation allows the exhaust component to be installed first in the optimized packaging envelope, followed by the attachment of the injector support structure, ensuring both compact packaging and reliable damage-free installation
Solution Approach 2:
The first bracket acts as an intermediary between the vehicle frame and the injector support structure. By attaching the first bracket to the frame in advance, it serves as a mediator that establishes the mounting location without interfering with exhaust component installation, while subsequently supporting the injector at the desired close proximity for optimized packaging
3Strength
If the injector is mounted first and then the exhaust component is attached, then the injector positioning is secure, but the exhaust component installation is hampered
Solution Approach 1:
The mounting process is segmented into distinct phases: first attaching the first bracket to the vehicle frame, then installing the exhaust component, and finally attaching the second bracket with the injector to the first bracket. This segmentation allows the exhaust component to be installed without obstruction while ensuring the injector achieves secure mounting in the final configuration
Solution Approach 2:
The first bracket is attached to the vehicle frame as a preliminary action before the exhaust component is installed. This preliminary mounting structure does not interfere with exhaust component installation, and subsequently provides a secure foundation for attaching the injector, ensuring both ease of installation and strong final mounting
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 secure and damage-free installation of injectors relative to exhaust components by ensuring they are positioned correctly before exhaust components are attached, thus preventing interference and damage.
Implementation Method 1
a heat shield attached to the second bracket that is configured to shield the injector from heat generated by the exhaust component
Data Source
AI summary
A bracket assembly for locating an injector relative to a vehicle exhaust component including a first bracket configured to be attached to a cross-beam of a vehicle frame; and a second bracket configured to be attached to the first bracket and including a primary panel configured to support the injector relative to the vehicle exhaust component The first bracket includes a first end, an opposite second end, and a planar section connecting the first end and the opposite second end, the first end, the opposite second end, and the planar section collectively defining a seat configured for receipt of the cross-beam; and the second bracket includes a first arm extending outward from the primary panel configured to mate with the first end and a second arm extending outward from the primary panel configured to mate with the second end.