Air inlet pipe integrated with oil return block

Abstract

The utility model belongs to the technical field of diesel engines, and particularly discloses an air inlet pipe integrated with an oil return block, which comprises an air inlet pipe, an oil injector oil return pipe, an oil rail oil return pipe, an oil pump oil return pipe and a main oil return pipe, and a diesel filter fixing plate and a wiring harness support fixing boss are arranged on the front end face of the air inlet pipe; the oil return block is located between the diesel filter fixing plate and the wiring harness support fixing boss, and the oil return block and the air inlet pipe are fixed into a whole; one end of the oil injector oil return pipe, one end of the oil rail oil return pipe and one end of the main oil return pipe are communicated with one another and mounted on the oil hole A of the oil return block through connecting bolts for the oil return pipes; one end of the oil pump oil return pipe is mounted on the oil hole B of the oil return block through a connecting bolt for the oil return pipe; the air inlet pipe adopts an integrated oil return block design, is compact in structure, reduces the number of parts and installation procedures, eliminates the loosening risk, and directly or indirectly reduces the cost of the diesel engine.

Description

Technical Field

[0001] The utility model belongs to the technical field of diesel engines, and particularly relates to an intake pipe integrated with an oil return block. Background Art

[0002] The intake manifold is the primary pathway for air to flow from the outside (through the air filter) to the engine's combustion chamber. It distributes air to each cylinder in a diesel engine, directly impacting the quality of combustion within the cylinders. This role has become even more prominent, especially with the increasing impact of emissions regulations for non-road diesel engines. Furthermore, within a diesel engine's fuel system, each injector, high-pressure rail, and common rail pump requires an independent oil return line. The oil return block provides a centralized interface, converging these dispersed oil return lines into a single outlet, where they are then returned to the fuel tank via the main line.

[0003] Currently, most common engine intake devices in China are single-function intake pipes. Although the structure of this type of intake device is relatively simple, its auxiliary function is poor and can only meet the normal air intake needs of the engine. The intake pipe and the oil return block are split designs, and the oil return block is fixed to the intake pipe or cylinder body with bolts. The structure is complex, the installation is cumbersome, and there is a risk of loosening. Utility Model Content

[0004] In response to the problems existing in the background technology, the utility model provides an intake pipe with an integrated oil return block. The intake pipe adopts an integrated oil return block design, has a compact structure, reduces the number of parts and installation procedures, eliminates the risk of loosening, and directly or indirectly reduces the cost of the diesel engine.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an intake pipe with an integrated oil return block, comprising an intake pipe, an injector oil return pipe, an oil rail oil return pipe, an oil pump oil return pipe and a main oil return pipe, the intake pipe comprising an air-conditioning compressor cradle, an oil pipe fixing cradle, a high-pressure oil rail fixing cradle, a sensor fixing boss, a bracket fixing boss, a diesel filter fixing plate, an oil return block, a wiring harness bracket fixing boss and a top column, the air-conditioning compressor cradle is located at the left end of the intake pipe; the oil pipe fixing cradle is located at the left end of the upper end face of the intake pipe, and the oil pipe fixing cradle is located to the right of the air-conditioning compressor cradle; the high-pressure oil rail fixing cradle is located at the oil pipe fixing cradle on the right side of the intake pipe; the sensor fixing boss is located at the right end of the upper end face of the intake pipe; the bracket fixing boss is located at the right end of the front end face of the intake pipe; the diesel filter fixing plate is located in the middle of the front end face of the intake pipe; the wiring harness bracket fixing boss is located at the left end of the front end face of the intake pipe; the oil return block is located between the diesel filter fixing plate and the wiring harness bracket fixing boss, and the oil return block is fixed to the intake pipe as a whole; one end of the injector oil return pipe, the oil rail oil return pipe and the main oil return pipe are connected to each other and are installed on the oil hole A of the oil return block through the oil return pipe with a connecting bolt; one end of the oil pump return pipe is installed on the oil hole B of the oil return block through the oil return pipe with a connecting bolt.

[0006] The air-conditioning compressor bracket is composed of six threaded holes, which are respectively arranged on the left end surface and the upper end surface of the air intake pipe.

[0007] The oil return block is a convex block on the front end face of the intake pipe. The upper end face of the oil return block is provided with an oil hole A, and the front end face of the oil return block is provided with an oil hole B. The oil hole A and the oil hole B are connected to each other, and the oil hole A and the oil hole B are threaded holes.

[0008] The other end of the fuel injector oil return pipe is connected to the fuel injector oil return port.

[0009] The other end of the oil rail oil return pipe is connected to the high-pressure oil rail oil return port.

[0010] The other end of the oil pump return pipe is connected to the oil pump return port.

[0011] The other end of the main oil return pipe is connected to the fuel tank.

[0012] The beneficial effects of the present invention are as follows: the present invention provides an intake pipe with an integrated oil return block, which has a compact structure, a reasonable design, and occupies little space when in use; the intake pipe is cast and integrated with the design of the oil return block, which greatly reduces the number of parts, reduces the risk of loosening, installation complexity and cost, and improves the reliability of engine operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the structure of the intake pipe;

[0014] Figure 2 It is the left side view of the intake pipe;

[0015] Figure 3 is a cross-sectional view of the intake pipe;

[0016] Figure 4 This is the working principle diagram of the intake pipe;

[0017] In the figure: 1. Air conditioning compressor bracket, 2. Oil pipe fixing bracket, 3. High-pressure oil rail fixing bracket, 4. Sensor fixing boss, 5. Bracket fixing boss, 6. Diesel filter fixing plate, 7. Oil return block, 8. Wiring harness bracket fixing boss, 9. Top column, 10. Injector oil return pipe, 11. Oil rail return pipe, 12. Oil pump return pipe, 13. Main oil return pipe. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the specification. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] The following is combined with Figure 1-4The specific embodiment of the present invention is further elaborated in detail: an intake pipe with an integrated oil return block, including an intake pipe, an injector oil return pipe 10, an oil rail return pipe 11, an oil pump return pipe 12 and a main oil return pipe 13, the intake pipe includes an air-conditioning compressor ledge 1, an oil pipe fixing ledge 2, a high-pressure oil rail fixing ledge 3, a sensor fixing boss 4, a bracket fixing boss 5, a diesel filter fixing plate 6, an oil return block 7, a wiring harness bracket fixing boss 8 and a top column 9, the air-conditioning compressor ledge 1 is located at the left end of the intake pipe; the air-conditioning compressor ledge 1 consists of six threaded holes, which are respectively provided on the left end face and the upper end face of the intake pipe; the air-conditioning compressor ledge 1 is used to install and fix the air-conditioning compressor, and the air-conditioning compressor ledge 1 can be selected at any position according to the installation position of the air-conditioning compressor Threaded hole for fixing; the oil pipe fixing bracket 2 is located at the left end of the upper end surface of the intake pipe, and the oil pipe fixing bracket 2 is located to the right of the air-conditioning compressor bracket 1; the oil pipe fixing bracket 2 is used to fix the high and low pressure oil pipes, so that the oil pipes are regular, beautiful, firmly fixed, and not easy to vibrate; the high-pressure oil rail fixing bracket 3 is located to the right of the oil pipe fixing bracket 2; the high-pressure oil rail fixing bracket 3 is used to install and fix the high-pressure oil rail and the high-pressure oil pipe; the sensor fixing boss 4 is located at the right end of the upper end surface of the intake pipe; the sensor fixing boss 4 is used to install the intake air temperature and pressure sensor; the bracket fixing boss 5 is located at the right end of the front end surface of the intake pipe; the bracket fixing boss 5 is used to install the wiring harness bracket, hood bracket, lower exhaust hose bracket and drain switch bracket on the intake pipe; The diesel filter fixing plate 6 is located in the middle of the front end face of the intake pipe; the diesel filter fixing plate 6 is a boss on the front end face of the intake pipe, and the coarse filter and fine filter of the engine are installed on the threaded holes of the diesel filter fixing plate 6 by bolts. There is no need to install a diesel filter fixing bracket, which reduces production costs and reduces vibration of the transmitter; the wiring harness bracket fixing boss 8 is located at the left end of the front end face of the intake pipe; the wiring harness bracket fixing boss 8 is used to fix the engine wiring harness; the oil return block 7 is located between the diesel filter fixing plate 6 and the wiring harness bracket fixing boss 8, and the oil return block 7 is fixed to the intake pipe as a whole; the oil return block 7 is a boss on the front end face of the intake pipe, and the upper end face of the oil return block 7 is provided with an oil hole A, and the front end face of the oil return block 7 is provided with an oil hole B, and the oil hole A and the oil hole B are connected to each other, and the oil hole A and the oil hole B are threaded holes ; One ends of the injector oil return pipe 10, the oil rail oil return pipe 11 and the main oil return pipe 13 are connected to each other, and are installed on the oil hole A of the oil return block 7 through the return pipe connecting bolts; one end of the oil pump return pipe 12 is installed on the oil hole B of the oil return block 7 through the return pipe connecting bolts; the other end of the injector oil return pipe 10 is connected to the injector oil return port; the other end of the oil rail oil return pipe 11 is connected to the high-pressure oil rail oil return port; the other end of the oil pump return pipe 12 is connected to the oil pump oil return port; the other end of the main oil return pipe 13 is connected to the fuel tank; the top column 9 is located at both ends of the intake pipe cavity; the function of the top column 9 is to increase the strength of the intake pipe. During machining, the clamp is installed on the outside of the top column 9 to prevent the intake pipe from deforming.

[0020] The use process of the utility model is as follows: first, the intake pipe is cast; then the cast intake pipe is machined; after the machining is completed, the intake pipe is installed on the engine; after the installation is completed, the air-conditioning compressor is installed on the air-conditioning compressor bracket 1, the high and low pressure oil pipes are installed on the oil pipe fixing bracket 2, the high pressure oil rail and the high pressure oil pipe are installed on the high pressure oil rail fixing bracket 3, the intake air temperature and pressure sensor is installed on the sensor fixing boss 4, the wiring harness bracket, the hood bracket, the lower exhaust hose bracket and the drain switch bracket are installed on the bracket fixing boss 5, the engine coarse filter and fine filter are installed on the threaded holes of the diesel filter fixing plate 6, and the engine wiring harness is fixed on the wiring harness bracket fixing boss 8; the injector The return oil pipe 10, the oil rail return oil pipe 11 and one end of the main oil return pipe 13 are connected to each other and then installed on the oil hole A of the oil return block 7, and one end of the oil pump return oil pipe 12 is installed on the oil hole B of the oil return block 7 through the return oil pipe with a connecting bolt; the other end of the injector return oil pipe 10 is connected to the injector return oil port; the other end of the oil rail return oil pipe 11 is connected to the high-pressure oil rail return oil port; the other end of the oil pump return oil pipe 12 is connected to the oil pump return oil port; the other end of the main oil return pipe 13 is connected to the fuel tank; after the installation is completed, start the engine; during the operation of the engine, because the engine adopts the intake pipe designed with an integrated oil return block, the overall structure is more compact, the number of parts and the installation process are reduced, and the risk of loosening is eliminated.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0022] The parts not described in detail in this utility model are prior art.

Claims

1. An air intake pipe with an integrated oil return block, comprising an air intake pipe, an injector oil return pipe (10), an oil rail oil return pipe (11), an oil pump oil return pipe (12) and a main oil return pipe (13), characterized in that: The intake pipe comprises an air-conditioning compressor cradle (1), an oil pipe fixing cradle (2), a high-pressure oil rail fixing cradle (3), a sensor fixing boss (4), a bracket fixing boss (5), a diesel filter fixing plate (6), an oil return block (7), a wiring harness bracket fixing boss (8) and a top column (9); the air-conditioning compressor cradle (1) is located at the left end of the intake pipe; the oil pipe fixing cradle (2) is located at the left end of the upper end face of the intake pipe, and the oil pipe fixing cradle (2) is located on the right side of the air-conditioning compressor cradle (1); the high-pressure oil rail fixing cradle (3) is located on the right side of the oil pipe fixing cradle (2); the sensor fixing boss (4) is located at the right end of the upper end face of the intake pipe; the The bracket fixing boss (5) is located at the right end of the front end face of the intake pipe; the diesel filter fixing plate (6) is located in the middle of the front end face of the intake pipe; the wiring harness bracket fixing boss (8) is located at the left end of the front end face of the intake pipe; the oil return block (7) is located between the diesel filter fixing plate (6) and the wiring harness bracket fixing boss (8), and the oil return block (7) is fixed to the intake pipe as a whole; one end of the injector oil return pipe (10), the oil rail oil return pipe (11) and the main oil return pipe (13) are connected to each other and are installed on the oil hole A of the oil return block (7) through the oil return pipe connecting bolt; one end of the oil pump oil return pipe (12) is installed on the oil hole B of the oil return block (7) through the oil return pipe connecting bolt.

2. The air intake pipe with an integrated oil return block according to claim 1, characterized in that: The air-conditioning compressor bracket (1) is composed of six threaded holes, which are respectively arranged on the left end surface and the upper end surface of the air intake pipe.

3. The air intake pipe with an integrated oil return block according to claim 1, characterized in that: The oil return block (7) is a convex block on the front end surface of the air inlet pipe. The upper end surface of the oil return block (7) is provided with an oil hole A, and the front end surface of the oil return block (7) is provided with an oil hole B. The oil hole A and the oil hole B are connected to each other, and the oil hole A and the oil hole B are threaded holes.

4. The air intake pipe with an integrated oil return block according to claim 1, characterized in that: The other end of the fuel injector oil return pipe (10) is connected to the fuel injector oil return port.

5. The air intake pipe with an integrated oil return block according to claim 1, characterized in that: The other end of the oil rail oil return pipe (11) is connected to the high-pressure oil rail oil return port.

6. The air intake pipe with an integrated oil return block according to claim 1, characterized in that: The other end of the oil pump return pipe (12) is connected to the oil pump return port.

7. The air intake pipe with an integrated oil return block according to claim 1, characterized in that: The other end of the main oil return pipe (13) is connected to the fuel tank.

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