CN201358841Y - Cylinder cover structure of natural gas engine - Google Patents

Abstract

The utility model discloses a cylinder cover structure of a natural gas engine. The structure comprises a cylinder cover (1) of an engine, and is characterized in that the cylinder cover (1) is provided with a combustor (2) which is provided with a spark plug hole (3). Aiming at the existing 4JB1 diesel engine, the applicant reforms the cylinder cover which is added with the combustor, so that the natural gas can be mixed with more air, thus achieving the purpose of complete combustion; and the combustor is provided with the spark plug hole, the igniting type structure is adopted, and an oil spray hole is canceled so as to suit the combustion of natural gas. Compared with the prior art, the cylinder cover structure has the advantages of low reforming cost, being suitable for using natural gas, high combustion efficiency and the like.

Description

Natural gas engine cylinder head structure

technical field

The utility model relates to a cylinder head structure of a natural gas engine, in particular to a cylinder head structure for transforming a 4JB1 diesel engine into a natural gas engine.

Background technique

Natural gas is a kind of clean energy, the main component is methane, and the main products after combustion are carbon dioxide and water. Therefore, natural gas vehicles have obvious advantages in terms of emissions. Compared with gasoline vehicles, natural gas vehicles have almost zero particulate matter emissions , NOx, CO and HC emissions are also significantly reduced. However, if natural gas is used on the basis of the existing fuel engine, there will be problems such as less air intake, insufficient combustion, and low power.

Contents of the invention

The purpose of the utility model is to provide a natural gas engine cylinder head structure which is specially used for natural gas and fully combustible, so as to overcome the deficiencies of the prior art.

The utility model is constituted like this: structure comprises the cylinder head of motor, is provided with combustion chamber on cylinder head, is provided with spark plug hole on combustion chamber.

In the cylinder head structure of the above-mentioned natural gas engine, the volume of the combustion chamber is 28.2 to 28.6 cubic centimeters.

For the existing 4JB1 diesel engine, the applicant modified the cylinder head and added a combustion chamber so that natural gas can be mixed with more air to achieve the purpose of full combustion. A spark plug hole was set on the combustion chamber and an ignition structure was adopted. The oil injection hole is canceled to be suitable for burning natural gas. Compared with the prior art, the utility model has the advantages of low reconstruction cost, suitable for using natural gas, and high combustion efficiency.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model;

Detailed ways

Embodiment of the present utility model: adopt the cylinder head 1 of existing 4JB1 diesel engine, make combustion chamber 2 on cylinder head 1, make spark plug hole 3 on combustion chamber 2, be used to install spark plug. In order to make the combustion of natural gas sufficient, the volume of the combustion chamber 2 is preferably 28.2 to 28.6 cubic centimeters.

Claims (2)

1. a natural gas engine air cylinder lid structure is constructed the cylinder head (1) that comprises motor, and it is characterized in that: be provided with firing chamber (2) on cylinder head (1), firing chamber (2) are provided with spark-plug hole (3).

2. natural gas engine air cylinder lid structure according to claim 1, it is characterized in that: the volume of firing chamber (2) is 28.2～28.6 cubic centimetres.

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