Improved structure of engine EGR cooler intake manifold

Abstract

This utility model discloses an improved structure for the intake pipe of an engine EGR cooler, including an intake pipe with a corrugated section in the middle. Near the corrugated section, the intake pipe has a counterweight structure for changing the weight ratio of the intake pipe, thereby changing the weight ratio of the entire intake pipe, thus avoiding resonance between the intake pipe and the engine and extending the service life of the intake pipe.

Description

Technical Field

[0001] This utility model relates to an engine EGR cooler, specifically an improved structure of the engine EGR cooler intake pipe. Background Technology

[0002] The engine EGR (Exhaust Gas Recirculation) cooler is a key component of the exhaust gas recirculation system. It is mainly used to reduce the temperature of the exhaust gas flowing back to the combustion chamber, thereby reducing nitrogen oxide (NOx) emissions and optimizing engine performance.

[0003] To connect with the engine, the EGR cooler is equipped with an intake pipe with a bellows structure. However, in actual operation, the engine will generate high-frequency vibrations. These vibrations can sometimes cause the intake pipe to resonate, which can lead to the intake pipe breaking at the bellows section. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes an improved structure for the intake pipe of an engine EGR cooler. It incorporates a counterweight structure on the existing intake pipe to alter the overall weight distribution of the intake pipe, thereby preventing resonance between the intake pipe and the engine and extending the service life of the intake pipe.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An improved structure for an engine EGR cooler intake pipe includes an intake pipe with a corrugated section in the middle. The characteristic feature is that the intake pipe has a counterweight structure near the corrugated section for changing the weight ratio of the intake pipe.

[0007] More specifically, the aforementioned counterweight structure is a metal wire coil or a metal ring.

[0008] More specifically, the inlet end of the aforementioned intake pipe is equipped with an intake connection flange that connects to the engine.

[0009] More specifically, the outlet end of the aforementioned air intake pipe is equipped with an air outlet connection flange that connects to the cooler.

[0010] This utility model discloses an improved structure for the intake pipe of an engine EGR cooler. It features a counterweight structure near the corrugated pipe section to change the overall weight distribution of the intake pipe, fundamentally solving the resonance phenomenon that occurs when the intake pipe resonates with the engine, preventing the corrugated pipe section from breaking, and effectively extending the service life of the intake pipe. Attached Figure Description

[0011] Figure 1 A three-dimensional structural diagram of this utility model;

[0012] Wherein, 1—inlet pipe, 11—corrugated pipe section, 12—inlet connection flange, 13—outlet connection flange, 2—counterweight structure. Detailed Implementation

[0013] like Figure 1 As shown, an improved structure of an engine EGR cooler intake pipe includes an intake pipe 1, with a corrugated pipe section 11 in the middle of the intake pipe 1.

[0014] The intake pipe 1 has an intake connection flange 12 at its inlet end. Each side of the intake connection flange 12 has a connection hole 121, which is fixedly connected to the engine by bolts.

[0015] The outlet end of the intake pipe 1 is provided with an exhaust connection flange 13. Each side of the exhaust connection flange 13 is also provided with a fixing hole 131. The fixing hole 131 is connected to the EGR cooler body by bolts.

[0016] The intake pipe 1 is equipped with a counterweight structure 2 near the corrugated pipe section 11. The counterweight structure 2 can change the weight ratio and center of gravity of the entire intake pipe 1. In actual use, by adjusting the counterweight structure 2 of different masses, the vibration frequency of the intake pipe 1 can be adjusted accordingly, and ultimately the vibration frequency of the intake pipe 1 is made inconsistent with that of the engine. This avoids the resonance phenomenon of the intake pipe 1 with the high-frequency vibration of the engine, eliminates the problem of the corrugated pipe section 11 breaking due to resonance, and effectively extends the service life of the intake pipe 1.

[0017] Here, since the working temperature of the intake pipe 1 is relatively high, the above counterweight structure 2 can be made of heat-resistant metal wire rings or metal rings. In practice, considering the ease of installation and also to reduce the extra burden on the intake pipe, the preferred method is to use metal wire rings.

[0018] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the utility model. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An improved structure of an engine EGR cooler intake pipe, comprising an intake pipe (1), a corrugated pipe section (11) is arranged in the middle of the intake pipe (1), characterized in that: The intake pipe (1) is provided with a counterweight structure (2) near the bellows section (11) for changing the weight ratio of the intake pipe (1).

2. An improved engine EGR cooler inlet pipe as claimed in claim 1, wherein: The counterweight structure (2) is a metal wire loop or a metal ring.

3. An improved inlet tube for an engine EGR cooler as defined in claim 1 or 2, characterized in that: The intake pipe (1) is provided with an intake connection flange (12) for connecting to the engine at its inlet end.

4. An improved inlet tube for an engine EGR cooler as defined in claim 1 or 2 wherein: The outlet end of the air inlet pipe (1) is provided with an air outlet connection flange (13) that is connected to the cooler.

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