CN201106504Y - A dual-fuel engine gas pipe adapter - Google Patents

Abstract

The utility model proposes a dual-fuel engine gas pipe transfer structure, which is to open an air intake hole on the intake manifold of the engine, and fix a joint seat on the air intake hole, between the joint seat and the intake manifold Sealed by a sealing ring, the center of the joint seat has an air channel connecting the air inlet hole and its side wall, and the gas pipe head is embedded in the joint seat from the air channel on its side wall in an interference fit manner, and sealed with a sealant. The utility model has the advantages of simple structure, little modification to the intake manifold, low cost, little space limitation and convenient installation. Therefore, for those intake manifolds that cannot be directly installed with natural gas high-pressure nozzles due to space constraints, the air pipe adapter with this structure can be used to make the jets ejected from the high-pressure nozzles enter the intake manifold through this adapter structure.

Description

A dual-fuel engine gas pipe adapter

technical field

The utility model belongs to the technical field of automobile engines, and in particular relates to the related structure of the fuel supply system of the engine.

Background technique

As people pay more and more attention to environmental protection and oil resources become more and more tense, environmentally friendly and energy-saving engines fueled by natural gas and LPG have become a new development direction for the automotive engine industry. Since most of the previous automobile engines were gasoline-fueled gasoline engines, how to improve the existing gasoline engines so that they can be engineered as dual-fuel engines that can use both gasoline and natural gas has become an important issue in the automotive industry. Research hotspots. In the fuel supply system of gasoline and natural gas dual-fuel engines, due to the limitation of the existing space, it is difficult to directly install the gas nozzle near the junction of the engine intake manifold and the cylinder head, so it needs to be installed near the outlet of the intake manifold. Design a connecting device---air pipe adapter, so that the gas sprayed from the gas nozzle can be effectively sprayed into the intake manifold through the air pipe adapter.

Contents of the invention

The purpose of this utility model is to provide a simple structure and convenient assembly, which can not only effectively inject high-pressure gas into the intake manifold, but also realize the improvement of the gasoline engine into a natural gas and gasoline dual-fuel engine. It can be realized with a small improvement, and the gas supply system becomes a relatively simple engineering structure.

The technical scheme of the utility model is as follows:

A dual-fuel engine gas pipe transition structure, which is an air intake hole on the engine intake manifold, a joint seat is fixedly connected to the air intake hole, and a sealing ring is placed between the joint seat and the intake manifold. Sealing, the center of the joint seat has an air channel connecting the air inlet hole and its side wall, and the gas pipe head is embedded into the joint seat from the air channel on its side wall in an interference fit manner, and sealed with a sealant.

When installing the joint seat and the gas pipe head, first drill a hole of a suitable size on the wall of the intake manifold, then extend the riveted head of the joint seat, and use a riveting tool to rive the edge of it, and then use O The sealing ring is used for sealing, and the gas pipe head is coated with sealant and then inserted into the joint seat by interference fit.

The utility model has the advantages of simple structure, little modification to the intake manifold, low cost, little space limitation and convenient installation. Therefore, for those intake manifolds that cannot be directly installed with natural gas high-pressure nozzles due to space constraints, the gas pipe adapter with this structure can be used, so that the gas ejected from the high-pressure nozzle enters the intake manifold through this adapter structure.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Referring to Fig. 1, the gas pipe transition structure is to open an air intake hole 2 on the engine intake manifold 1, and rivet a joint seat 3 on the air intake hole 2, between the joint seat 3 and the intake manifold 1 Sealed by the O-ring 4, the center of the joint seat 3 has an air channel 5 connecting the air inlet hole and its side wall, and the gas pipe head 6 is embedded in the joint seat 3 in an interference fit manner from the air channel on the side wall, and used Sealant seals.

Claims (1)

1, a kind of duel fuel engine combustion gas tracheae exchanging structure, it is characterized in that it is to open an inlet hole on engine intake manifold, on this inlet hole, fix a connection block, seal by seal ring between connection block and the intake manifold, the connection block center has the air flue that is communicated with inlet hole and its sidewall, the combustion gas tube head imbeds connection block from the air flue of connection block sidewall with interference fit, and seals with sealer.

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