Double-flow exhaust system with separate end mufflers
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Solution Overview
Problem
Existing double-flow exhaust systems for internal-combustion engines lack sufficient free installation space around the exhaust tail pipe and have complex mounting processes, making assembly and transportation of preassembled units cumbersome.
Innovation Solution
The system features separate end mufflers for each exhaust line, connected by a mountable connection pipe, allowing for increased space utilization and easier assembly, with a T-pipe piece and sliding sleeve for secure connections, and an additional connection pipe for noise muffling and torque enhancement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If two exhaust lines are guided together at the end into a common end muffler housing, then the exhaust system structure is compact, but the free installation space in the area of the exhaust tail pipe is reduced and the mounting becomes complex
Solution Approach 1:
The exhaust system is segmented into separate end mufflers for each exhaust line, with the first exhaust line leading to a first end muffler and the second exhaust line leading to a second end muffler. This segmentation creates spatial separation that increases free installation space around the exhaust tail pipe and simplifies mounting operations by allowing independent assembly of each exhaust line with its corresponding end muffler.
Solution Approach 2:
The patent utilizes vertical spatial arrangement by positioning the first end muffler and second end muffler at different vertical levels, connected by a connection pipe that extends between them. This dimensional arrangement optimizes space utilization while maintaining accessibility for installation and service operations.
2Reliability
If the exhaust system is assembled as a complete unit, then all connections are pre-established, but the transportation and assembly become cumbersome
Solution Approach 1:
The exhaust system is divided into modular segments: each exhaust line can be assembled with its corresponding end muffler as a separate pre-assembled unit. These modular segments can be transported independently and then connected on-vehicle, combining the benefits of pre-assembly reliability with the advantages of simplified transportation and installation.
Solution Approach 2:
The exhaust lines are pre-assembled with their respective end mufflers before vehicle installation. This preliminary assembly ensures proper connection reliability while allowing the modular units to be transported and installed more easily than a complete integrated system, as each module is smaller and more manageable.
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 configuration increases installation space, simplifies the mounting process, facilitates preassembly and transportation, and provides effective noise muffling and torque increase, particularly in the low rotational speed range.
Implementation Method 1
a second connection pipe between the two end mufflers contributes to the muffling of noise, particularly of the low-frequency fractions in the low rotational speed range
Data Source
AI summary
A double-flow exhaust system for an internal-combustion engine, having exhaust-gas-carrying pipes and at least one muffler and catalyst housing. A separate end muffler is provided for each exhaust line, on which the end mufflers are both fluidically connected by at least one preferably mountable connection pipe.