CN204458069U - Integrated discharge manifold formula three cylinder machine cooling jacket - Google Patents

Abstract

The utility model relates to a cooling water jacket for an integrated exhaust manifold type three-cylinder engine, which comprises a cylinder head with an intake side and an exhaust side, and the exhaust side of the cylinder head has an exhaust throat and an exhaust port. And an exhaust manifold is also integrated between the exhaust throat and the exhaust port; the front end of the cylinder head has a water inlet, and the rear end of the cylinder head has a water outlet, and the water inlet and outlet A cooling water passage is provided between the water ports; an exhaust side water jacket connected to the cooling water passage is provided at the upper and lower ends of the exhaust manifold, and a water jacket connected to the cooling water passage is provided on the intake side of the cylinder head. The inlet side water jacket of the water channel. The cooling water jacket of the utility model improves the cooling uniformity of the exhaust side, improves the heat cycle of the engine and can use the waste heat for the preheating of the engine room, improves the engine warm-up speed, and reduces the friction of internal components during cold start. Reduce engine fuel consumption.

Description

Integrated exhaust manifold type three-cylinder engine cooling water jacket

technical field

The utility model relates to the technical field of automobile engine structure design, more specifically, the utility model relates to an integrated exhaust manifold type three-cylinder machine cooling water jacket.

Background technique

In the prior art, the flow of cooling water on the exhaust side in the water jacket design is small and uneven; at the same time, in the design process of small and medium-sized engines, it is not easy to arrange due to the small space. Its disadvantages are: (1) slow warm-up speed when the engine is cold started, high fuel consumption, and large emissions of CO and CH compounds in the exhaust gas; (2) low thermal cycle efficiency; (3) due to the limitation of the volume of the non-integrated cylinder head , the volume distribution of the cooling water jacket is compressed, resulting in insufficient and uneven cooling of the cylinder head, local overheating or high and low frequency thermal shocks and cracks appear, thus causing the failure of the cylinder head.

Utility model content

In order to solve the above-mentioned technical problems in the prior art, the purpose of the utility model is to provide an integrated exhaust manifold type three-cylinder engine cooling water jacket.

In order to achieve the above object, the utility model adopts the following technical solutions:

A cooling water jacket for an integrated exhaust manifold type three-cylinder engine, comprising a cylinder head with an intake side and an exhaust side, the exhaust side of the cylinder head has an exhaust throat and an exhaust port, and the An exhaust manifold is also integrated between the exhaust throat and the exhaust port; it is characterized in that: the front end of the cylinder head has a water inlet, and the rear end of the cylinder head has a water outlet, and the water inlet and outlet A cooling water passage is provided between the water ports; an exhaust side water jacket connected to the cooling water passage is provided at the upper and lower ends of the exhaust manifold, and a water jacket connected to the cooling water passage is provided on the intake side of the cylinder head. Water jacket on the intake side of the water channel.

Compared with the prior art, the integrated exhaust manifold type three-cylinder engine cooling water jacket described in the utility model has the following beneficial effects:

(1) The cooling water jacket of the utility model improves the cooling uniformity of the exhaust side, improves the thermal cycle of the engine and can use the waste heat for the preheating of the cabin, improves the engine warm-up speed, and reduces the internal components during cold start friction and reduce engine fuel consumption.

(2) The aluminum alloy used in the cylinder head of the utility model not only has good casting processability, but also has good thermal stability and small thermal deformation, and has excellent performance under the conditions of immersion in cooling liquid and gasoline. Corrosion resistance, and has good fatigue resistance.

Description of drawings

Fig. 1 is the schematic diagram of the first section of the cooling water jacket of the integrated exhaust manifold type three-cylinder engine described in embodiment 1;

Fig. 2 is a schematic diagram of the second section of the cooling water jacket of the integrated exhaust manifold type three-cylinder engine described in Embodiment 1.

Detailed ways

The integrated exhaust manifold type three-cylinder engine cooling water jacket described in the utility model will be further elaborated below in conjunction with specific embodiments, so as to help those skilled in the art to have a more complete and comprehensive understanding of the utility model concept and technical solution of the utility model. Accurate and in-depth understanding.

Example 1

As shown in Figures 1-2, the integrated exhaust manifold type three-cylinder engine cooling water jacket described in this embodiment includes a cylinder head with an intake side and an exhaust side, and the exhaust side of the cylinder head has a An air throat 4 and an exhaust port 5, and an exhaust manifold 8 is also integrated between the exhaust throat 4 and the exhaust port 5; the front end of the cylinder head has a water inlet 2, and the cylinder The rear end of the cover has a water outlet 3, and a cooling water channel 1 is provided between the water inlet 2 and the water outlet 3; the upper and lower ends of the exhaust manifold 8 are provided with an exhaust side connected to the cooling water channel. A water jacket 7 is provided on the intake side of the cylinder head with an intake-side water jacket 6 connected to the cooling water channel.

In this embodiment, cooling water jackets are designed on the upper and lower end surfaces of the integrated exhaust manifold, and water outlets are designed on the rear end surface of the cylinder head to meet the cooling requirements of the water jacket. By integrating the heat of the exhaust manifold cooling water jacket, it can effectively increase the engine warm-up speed and reduce the friction of internal components during cold start, thereby reducing the fuel consumption of the engine and reducing the emission of _CO2 and CH compounds in the exhaust gas. Through hot water circulation, the system transfers the hot water in the cooling water jacket of the exhaust manifold to the heat exchanger under the action of the water pump, so that warm air can be obtained faster, and the thermal cycle of the engine and the preheating of the cabin are improved. . Compared with the traditional water jacket, it can effectively reduce the fuel consumption of the engine at high load and near full load conditions, thereby reducing engine emissions.

For those of ordinary skill in the art, the specific embodiment is only an exemplary description of the utility model. Obviously, the specific implementation of the utility model is not limited by the above-mentioned method, as long as the method concept and technical solution of the utility model are adopted to carry out Various insubstantial improvements, or directly applying the concept and technical solutions of the utility model to other occasions without improvement, are all within the protection scope of the utility model.

Claims (1)

1. an integrated discharge manifold formula three cylinder machine cooling jacket, comprises the cylinder cap with air inlet side and exhaust side, and the exhaust side of described cylinder cap has exhaust aditus laryngis and relief opening, and is also integrated with discharge manifold between described exhaust aditus laryngis and described relief opening; It is characterized in that: described cylinder cap front end has water intake, and the rear end of described cylinder cap has water outlet, is provided with cooling water channel between described water intake and water outlet; Be provided with the exhaust side water jacket being communicated to described cooling water channel in the top and bottom of described discharge manifold, be provided with the air inlet side water jacket being communicated to described cooling water channel in the air inlet side of described cylinder cap.