CN201751548U - Engine water outlet support - Google Patents

Abstract

The utility model provides an engine water outlet support, including an EGR exhaust gas channel and a cooling liquid channel, wherein the EGR exhaust gas channel and the cooling liquid channel are two independence and neighboring cavities integrated on a water outlet support, and the EGR exhaust gas channel is arranged on the periphery of the cooling liquid channel. According to the utility model, the cooling liquid channel and the EGR exhaust gas channel are integrated on the engine water outlet support, the high EGR exhaust gas temperature can be reduced by the cooling liquid effectively, so as to improve charging efficiency and power performance of the engine; the whole structure of the engine is compact to save space; cost is low, and a low-cost compact engine is implemented farthest.

Description

An engine water outlet support

【Technical field】

The utility model relates to an exhaust and liquid discharge device of an engine, in particular to an integrated device of a cooling liquid channel and an EGR exhaust gas channel.

【Background technique】

In order to reduce the emission of harmful substances in the engine and meet the increasingly stringent requirements of emission regulations, EGR exhaust gas recirculation technology has become a relatively common technology for gasoline engines.

For the intake manifold of cast aluminum, the engine that does not arrange the EGR valve to control the EGR exhaust gas ratio adopts such a method: the EGR exhaust gas channel is directly made on the cylinder head and the manifold (as shown in Figure 1); the EGR valve is arranged to control the EGR exhaust gas The proportion of the engine adopts such a method: the EGR valve is directly connected to the cylinder head, and the EGR exhaust gas passage is directly made on the cylinder head and the intake manifold (as shown in Figure 2). Both of these methods save the EGR exhaust pipeline outside the engine, the entire EGR circuit layout is simple, and the engine structure is compact, but because the intake manifold of cast aluminum is used, the weight of the entire engine increases a lot, which is not in line with the current light weight of the engine requirements.

For plastic intake manifolds, an independent EGR exhaust gas circuit is generally used. The EGR valve is directly connected to the cylinder head or connected to the EGR exhaust gas outlet on the cylinder head through an independent adapter, and the EGR pipeline is arranged externally to connect with the intake manifold. This arrangement meets the requirements of engine lightweight, but the overall arrangement is not as compact as the former.

Regardless of whether the intake manifold is made of cast aluminum or plastic, the coolant outlet channel and the EGR exhaust gas outlet channel on the current engine are separated and independent. On the engine, a water outlet support is required (only antifreeze channel), a water outlet support gasket, an EGR exhaust gas seat (only the exhaust gas channel, if the EGR valve seat is directly made on the cylinder head, it is not required), an EGR valve gasket and related parts to complete the two fluids cycle.

Common disadvantages of such structures are:

1. Because the outlets of the two fluid passages are separated and independent, the coolant cannot be effectively used to cool the EGR exhaust gas and reduce the intake air temperature;

2. Because the outlets of the two fluid passages are separated and independent, the space layout of the engine is not compact enough, and the space of the engine compartment cannot be effectively used;

3. Since two seats are required to serve as the outlets of the two fluids respectively, the purchase cost of the engine increases.

【Content of utility model】

In order to solve the problems in the prior art, the utility model provides an engine water outlet support.

The utility model provides an engine water outlet support including an EGR exhaust gas channel and a cooling liquid channel, and the EGR exhaust gas channel and the cooling liquid channel are two mutually independent and closely adjacent cavities integrated on the water outlet support. The EGR exhaust gas passage is arranged on the periphery of the coolant passage.

As a further improvement of the utility model, the EGR exhaust gas channel includes a first exhaust gas channel and a second exhaust gas channel, and an EGR valve mounting surface for installing an EGR valve is arranged between the first exhaust gas channel and the second exhaust gas channel, so The first exhaust gas passage and the second exhaust gas passage communicate through the EGR valve.

As a further improvement of the utility model, it includes a radiator water pipe interface, the radiator water pipe interface communicates with the cooling liquid channel, and is located on the left side of the first exhaust gas channel, and the left side is branched from the outlet perpendicular to the water outlet. The face where the seat is connected to the engine cylinder head and the EGR valve mounting face is located below the point of view.

As a further improvement of the utility model, it includes a HVAC outlet pipe interface, the HVAC outlet pipe interface communicates with the cooling liquid channel, and is located on the right side of the second exhaust gas channel, and the right side is from the outlet vertically The surface where the water port support is connected to the engine cylinder head and the EGR valve installation surface is located below.

As a further improvement of the present invention, a throttle body heating water pipe interface is included, and the throttle body heating water pipe interface communicates with the cooling liquid channel, and is located between the EGR valve installation surface and the HVAC outlet pipe interface.

As a further improvement of the present invention, it includes a coolant temperature sensor installation surface, the coolant temperature sensor installation surface communicates with the coolant channel, and is located between the radiator water pipe interface and the HVAC outlet pipe interface.

As a further improvement of the utility model, an EGR pipe installation surface is included, and a passage is provided between the EGR pipe installation surface and the second exhaust gas passage.

The utility model integrates the cooling liquid channel and the EGR exhaust gas channel, and effectively uses the cooling liquid to reduce the higher EGR exhaust gas temperature, which is conducive to improving the engine charging efficiency and improving the power performance; it ensures that the overall layout of the engine is compact and saves space; and the cost lower, to maximize the purpose of low-cost compact engines.

【Description of drawings】

FIG. 1 is a structural schematic diagram of an engine in the prior art without an EGR valve for controlling the proportion of EGR exhaust gas.

Fig. 2 is a structural schematic diagram of an engine in which an EGR valve is arranged to control the proportion of EGR exhaust gas in the prior art.

Fig. 3 is a schematic diagram of the rear end of the engine cylinder head;

Fig. 4 is a schematic diagram of the structure of the water outlet support gasket;

Fig. 5 is a schematic diagram of the three-dimensional structure of the water outlet support of the utility model;

Fig. 6 is the front view of Fig. 5;

Fig. 7 is the back view of Fig. 5;

Figure 8 is a top view of Figure 5;

Fig. 9 is the bottom view of Fig. 5;

Fig. 10 is the left view of Fig. 5;

Fig. 11 is a right side view of Fig. 5 .

The names of the components in the figure are as follows:

EGR exhaust gas channel 1, first exhaust gas channel 101, second exhaust gas channel 102, coolant channel 2, radiator water pipe connection 3, HVAC outlet pipe connection 4, throttle body heating water pipe connection 5, coolant temperature sensor installation surface 6 , EGR valve mounting surface 7, EGR pipe mounting surface 8, EGR valve stud 9.

【Detailed ways】

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

An engine water outlet support, which integrates two mutually independent and adjacent cavities on the water outlet support, one is the coolant channel 1, and the other is the EGR exhaust gas channel 2; a metal gasket is used between the two cavities. seal. The shape of the water outlet support gasket is consistent with the shape of the joint surface on the cylinder head, and it is also divided into two separate coolant chambers and EGR exhaust gas chambers, as shown in Figure 4. The EGR exhaust gas channel 1 and the cooling liquid channel 2 are two mutually independent and adjacent cavities integrated on the water outlet support, and the EGR exhaust gas channel 1 is arranged on the periphery of the cooling liquid channel 2 .

The EGR exhaust gas channel 1 includes a first exhaust gas channel 101 and a second exhaust gas channel 102, and an EGR valve installation surface 7 for installing an EGR valve is arranged between the first exhaust gas channel 101 and the second exhaust gas channel 102, and the first exhaust gas channel 101 and the second exhaust gas channel 102 An exhaust gas passage 101 communicates with a second exhaust gas passage 102 through an EGR valve.

There are two independent cavities on the water outlet support to arrange the coolant channel and the EGR exhaust gas channel respectively, and integrate the radiator water pipe interface 3, the HVAC outlet pipe interface 4, the throttle body heating water pipe interface 5, and the coolant temperature sensor installation surface 6, and the EGR valve installation surface 7 and the EGR pipe installation surface 8.

The radiator water pipe interface 3 communicates with the coolant channel 2 and is located on the left side of the first exhaust gas channel 101, the left side is from the surface perpendicular to the connection between the water outlet support and the engine cylinder head and the The EGR valve mounting surface 7 is located in the lower perspective.

The HVAC outlet pipe interface 4 communicates with the coolant channel 2 and is located on the right side of the second exhaust gas channel 102. The EGR valve mounting surface 7 is located in the lower perspective.

The throttle body heating water pipe interface 5 communicates with the coolant passage 2 and is located between the EGR valve installation surface 7 and the HVAC outlet pipe interface 4 .

The coolant temperature sensor installation surface 6 communicates with the coolant channel 2 and is located between the radiator water pipe interface 3 and the HVAC outlet pipe interface 4 . An EGR pipe installation surface 8 is included, and a passage is provided between the EGR pipe installation surface 8 and the second exhaust gas passage 102 .

Coolant channel:

The coolant enters the water outlet support from the engine cylinder head, leading to the radiator water pipe connection 3, the HVAC water pipe connection 4, the throttle body heating water pipe connection 5, and the coolant temperature sensor.

Exhaust channel:

Exhaust gas enters the EGR first exhaust gas channel 101 of the water outlet support from the cylinder head, the EGR valve assembly and the water outlet support are fixed together by studs, and the exhaust gas enters the EGR valve through the first hole on the EGR valve installation surface 7 , enter the first waste gas channel 102 of the water outlet support from the EGR valve through the second hole on the EGR valve mounting surface 7, communicate with the EGR pipe through a hole on the EGR pipe mounting surface 8, and enter the EGR pipe.

The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For a person of ordinary skill in the technical field to which the utility model belongs, without departing from the concept of the utility model, some simple deduction or substitutions can also be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (7)

1. A water outlet support for an engine, comprising an EGR exhaust gas channel (1) and a coolant channel (2), characterized in that: the EGR exhaust gas channel (1) and the coolant channel (2) are integrated in the water outlet support There are two mutually independent and adjacent cavities on the seat, and the EGR exhaust gas channel (1) is arranged on the periphery of the cooling liquid channel (2). 2. The engine water outlet support according to claim 1, characterized in that: the EGR exhaust gas channel (1) comprises a first exhaust gas channel (101) and a second exhaust gas channel (102), and the first exhaust gas channel (102) An EGR valve mounting surface (7) for installing an EGR valve is provided between the exhaust gas passage (101) and the second exhaust gas passage (102), and the first exhaust gas passage (101) and the second exhaust gas passage (102) pass through the EGR valve connected. 3. The engine water outlet support according to claim 2, characterized in that: it includes a radiator water pipe interface (3), and the radiator water pipe interface (3) communicates with the coolant passage (2), It is located on the left side of the first exhaust gas channel (101), and the left side is seen from the angle perpendicular to the surface connecting the water outlet support and the engine cylinder head and the EGR valve installation surface (7) is located below. 4. The engine water outlet support according to claim 2, characterized in that it comprises a HVAC outlet pipe interface (4), and the HVAC outlet pipe interface (4) is connected to the coolant channel (2) communicated, located on the right side of the second exhaust gas passage (102), the right side is viewed from the angle perpendicular to the surface connecting the water outlet support and the engine cylinder head and the EGR valve installation surface (7) is located below . 5. The engine water outlet support according to claim 2, characterized in that: it includes a throttle body heating water pipe interface (5), and the throttle body heating water pipe interface (5) is connected to the coolant channel ( 2) Communication, located between the EGR valve installation surface (7) and the HVAC outlet pipe interface (4). 6. The engine water outlet support according to claim 2, characterized in that: it includes a cooling liquid temperature sensor mounting surface (6), and the cooling liquid temperature sensor mounting surface (6) is connected to the cooling liquid passage ( 2) Communication, located between the radiator water pipe interface (3) and the HVAC outlet pipe interface (4). 7. The engine water outlet support according to claim 2, characterized in that: it comprises an EGR pipe installation surface (8), and the connection between the EGR pipe installation surface (8) and the second exhaust gas passage (102) Set the channel between.

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