Engine without intake manifold

Abstract

The invention discloses an engine without an intake manifold, which realizes the simplification of the structure and the reduction of the cost by reducing additional parts such as an independent intake manifold, a sealing gasket, a mounting bolt and the like, is more compact in engine layout due to an integrated design, is beneficial to optimizing the internal space of a vehicle and reducing the weight of the engine, and is beneficial to improving the reliability of the engine by reducing the number of the parts. The assembly process is simplified, the production cost is reduced, and the inlet of the integrated intake manifold is located between the second cylinder and the third cylinder, so that uniform gas distribution of each cylinder is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of an engine without an intake manifold, in particular to an engine without an intake manifold. Background Art

[0002] An engine is a machine that can convert other forms of energy into mechanical energy, including internal combustion engines, external combustion engines, jet engines, electric motors, etc. For example, an internal combustion engine usually converts chemical energy into mechanical energy. The engine is applicable to both power generation devices and the entire machine including the power device. The engine was first born in the UK, so the concept of engine also originated from English, and its original meaning refers to the "mechanical device that generates power."

[0003] Conventional engines usually use a separate intake manifold, which not only increases the overall size of the engine, but also requires additional seals and fasteners. These additional parts increase assembly steps and time, increasing production costs. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above problems and / or the problems existing in the existing engine without an intake manifold, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide an engine without an intake manifold, by integrating the intake manifold with the cylinder head and reducing additional components such as an independent intake manifold, gaskets, mounting bolts, etc., to achieve structural simplification and cost reduction. The integrated design makes the engine layout more compact, helps to optimize the interior space of the vehicle and reduce the overall weight of the engine. By reducing the number of components, the assembly process is simplified and the production cost is reduced. The inlet of the integrated intake manifold is located between the second cylinder and the third cylinder, ensuring uniform gas distribution in each cylinder.

[0007] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] An engine without an intake manifold, comprising:

[0009] An engine cylinder head, wherein an intake manifold inlet is arranged on the right side of the engine cylinder head, wherein the intake manifold inlet is located between the second cylinder and the third cylinder of the engine cylinder head, wherein an integrated intake manifold is arranged inside the intake manifold inlet, wherein the integrated intake manifold is designed to be integrated with the engine cylinder head, wherein a plurality of intake passages are provided at the rear end of the integrated intake manifold for connecting the integrated intake manifold with the cylinders to ensure uniform distribution of intake air to each cylinder.

[0010] As a preferred solution of the engine without intake manifold described in the present invention, a throttle mounting flange is provided on the right side wall of the intake manifold inlet, and the throttle mounting flange is used to provide a position for directly mounting the throttle body, and a plurality of throttle mounting threaded holes are opened on the side wall of the throttle mounting flange, and the throttle mounting threaded holes are used to be mounted and fixed with the throttle body.

[0011] As a preferred solution of the engine without an intake manifold described in the present invention, an intake camshaft bearing is arranged near the right side of the top of the engine cylinder head, and an exhaust camshaft bearing is arranged near the left side of the top of the engine cylinder head.

[0012] As a preferred solution of the engine without an intake manifold described in the present invention, the top of the engine cylinder head has a cylinder head upper top surface, and the cylinder head upper top surface is a flat surface for connecting and installing a cylinder head cover.

[0013] As a preferred solution of an engine without an intake manifold described in the present invention, a plurality of ignition coil mounting holes are evenly arranged at the center position of the top of the engine cylinder head, a plurality of direct-drive tappet holes are arranged at the top of the engine cylinder head, and the plurality of direct-drive tappet holes are distributed on both sides of the ignition coil mounting hole, a plurality of spark plug mounting holes are arranged at the bottom of the engine cylinder head, and an injector mounting hole is installed at a position at the bottom of the engine cylinder head corresponding to the inlet of the intake manifold.

[0014] As a preferred solution of an engine without an intake manifold described in the present invention, an integrated exhaust manifold is installed on the left side of the engine cylinder head, the integrated exhaust manifold is designed as a whole with the engine cylinder head, the left side of the integrated exhaust manifold has a supercharger mounting surface, and the side walls of the integrated exhaust manifold are respectively provided with an integrated exhaust manifold lower air outlet and an integrated exhaust manifold upper air outlet.

[0015] As a preferred solution of the engine without an intake manifold described in the present invention, an undercut structure is installed on the inner wall of the throttle mounting flange.

[0016] Compared with the existing technology: by integrating the intake manifold with the cylinder head and reducing additional components such as independent intake manifold, gaskets, mounting bolts, etc., the structure is simplified and the cost is reduced. The integrated design makes the engine layout more compact, which helps to optimize the interior space of the vehicle or reduce the overall weight. By reducing the number of components, the assembly process is simplified and the production cost is reduced. The inlet of the integrated intake manifold is located between the second cylinder and the third cylinder, ensuring uniform gas distribution in each cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 This is an overall structural diagram of an engine cylinder head without an intake manifold according to the present invention;

[0019] Figure 2 This is a side structural diagram of an engine cylinder head without an intake manifold according to the present invention;

[0020] Figure 3 A cross-sectional view of an engine cylinder head integrated intake manifold without an intake manifold according to the present invention;

[0021] Figure 4 This is a structural diagram of an engine cylinder head integrated intake manifold without an intake manifold according to the present invention;

[0022] Figure 5 The present invention is a partial structural diagram of an engine cylinder head without an intake manifold. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0025] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] The present invention provides an engine without an intake manifold, which achieves structural simplification and cost reduction by integrating the intake manifold with the cylinder head and reducing additional components such as an independent intake manifold, a sealing gasket, and mounting bolts. The integrated design makes the engine layout more compact, helps to optimize the interior space of the vehicle and reduce the overall weight of the engine. By reducing the number of components, the assembly process is simplified and the production cost is reduced. The inlet of the integrated intake manifold is located between the second cylinder and the third cylinder, ensuring uniform gas distribution in each cylinder.

[0027] Regarding the above-mentioned problem to be solved: conventional engines usually use an independent intake manifold, which not only increases the overall size of the engine, but also requires additional seals and fasteners. These additional components increase the assembly steps and time, and increase the production cost.

[0028] The solution is as follows: an engine without an intake manifold in this embodiment includes an engine cylinder head 1 , an integrated intake manifold 5 and an integrated exhaust manifold 13 .

[0029] All engine cylinder head components are connected inside the engine cylinder head 1. An intake manifold inlet 3 is arranged on the right side of the engine cylinder head 1. The intake manifold inlet 3 is located between the second cylinder and the third cylinder of the engine cylinder head 1. An integrated intake manifold 5 is arranged inside the intake manifold inlet 3. The integrated intake manifold 5 is designed to be integrated with the engine cylinder head 1. The tail end of the integrated intake manifold 5 has multiple intake passages 17 for connecting the integrated intake manifold 5 with the cylinders to ensure uniform distribution of intake air in each cylinder. The engine cylinder head 1 provides a solid foundation for installing all relevant engine components. A throttle mounting flange 2 is arranged on the right side wall of the intake manifold inlet 3. The throttle mounting flange 2 is used to provide a direct mounting position for the throttle body. A plurality of throttle mounting threaded holes 4 are opened on the side wall of the throttle mounting flange 2. The throttle mounting threaded holes 4 are used to be mounted and fixed to the throttle body. The throttle mounting flange 2 is a throttle mounting flange. The door body provides a direct installation position, and the throttle mounting threaded hole 4 is pre-drilled to facilitate the fixing of the throttle body. Since the range extender engine usually works in a very narrow speed range, only a shorter intake manifold is required. The integrated intake manifold 5 is integrated with the engine cylinder head 1 to reduce the need for additional components, including an independent intake manifold, a gasket, mounting bolts, an intake manifold bracket and its related bolts. The integrated design makes the engine layout more compact, which helps to optimize the vehicle's internal space and reduce the overall weight of the engine. By reducing the number of components, the assembly process is simplified and the production cost is reduced. The inner wall of the throttle mounting flange 2 is installed with an undercut structure 18. When the gas passes through the undercut structure 18, the forward flow resistance of the gas is almost unchanged, and the reverse flow resistance increases, reducing the gas backflow generated by the alternating process of valve opening and closing, thereby reducing the reverse pressure wave of the intake. Improve the intake efficiency and reduce fuel consumption.

[0030] An intake camshaft bearing 6 is arranged near the right side of the top of the engine cylinder head 1, and an exhaust camshaft bearing 7 is arranged near the left side of the top of the engine cylinder head 1. The top of the engine cylinder head 1 has a cylinder head top surface 8, and the cylinder head top surface 8 is a flat surface for installation and connection with the cylinder head cover. The intake camshaft bearing 6 and the exhaust camshaft bearing 7 are used to support the rotation of the camshaft to ensure the normal opening and closing of the valve.

[0031] A plurality of ignition coil mounting holes 9 are evenly arranged at the center position of the top of the engine cylinder head 1, a plurality of direct-drive tappet holes 10 are arranged at the top of the engine cylinder head 1, and the plurality of direct-drive tappet holes 10 are distributed on both sides of the ignition coil mounting hole 9, a plurality of spark plug mounting holes 11 are arranged at the bottom of the engine cylinder head, and an injector mounting hole 12 is installed at a position corresponding to the intake manifold inlet 3 at the bottom of the engine cylinder head. The ignition coil mounting hole 9, the direct-drive tappet hole 10, the spark plug mounting hole 11, and the injector mounting hole 12 provide installation positions for the ignition system and the fuel supply system.

[0032] An integrated exhaust manifold 13 is installed on the left side of the engine cylinder head 1. The integrated exhaust manifold 13 is designed as an integral unit with the engine cylinder head 1. A supercharger mounting surface 14 is provided on the left side of the integrated exhaust manifold 13. An integrated exhaust manifold lower air outlet 15 and an integrated exhaust manifold upper air outlet 16 are respectively provided on the side walls of the integrated exhaust manifold 13. The integrated exhaust manifold 13 is similar to the integrated intake manifold 5 and is also integrated with the engine cylinder head 1, thereby improving the overall compactness and efficiency. The supercharger mounting surface 14 provides an installation interface for a turbocharger or other supercharging device. The integrated exhaust manifold lower air outlet 15 and the integrated exhaust manifold upper air outlet 16 are used to guide the direction of exhaust gas discharge.

[0033] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An engine without an intake manifold, characterized in that: include: An engine cylinder head (1), wherein an intake manifold inlet (3) is arranged on the right side of the engine cylinder head (1), wherein the intake manifold inlet (3) is located between the second cylinder and the third cylinder of the engine cylinder head (1), wherein an integrated intake manifold (5) is arranged inside the intake manifold inlet (3), wherein the integrated intake manifold (5) is integrally designed with the engine cylinder head (1), and wherein a plurality of intake passages (17) are provided at the rear end of the integrated intake manifold (5) for connecting the integrated intake manifold (5) with the cylinders to ensure uniform distribution of intake air.

2. An engine without an intake manifold according to claim 1, characterized in that: A throttle mounting flange (2) is provided on the right side wall of the intake manifold inlet (3), and the throttle mounting flange (2) is used to provide a direct mounting position for the throttle body. A plurality of throttle mounting threaded holes (4) are provided on the side wall of the throttle mounting flange (2), and the throttle mounting threaded holes (4) are used to be mounted and fixed to the throttle body.

3. An engine without an intake manifold according to claim 1, characterized in that: An intake camshaft bearing (6) is arranged near the right side of the top of the engine cylinder head (1), and an exhaust camshaft bearing (7) is arranged near the left side of the top of the engine cylinder head (1).

4. The engine without intake manifold according to claim 1, characterized in that: The top of the engine cylinder head (1) is provided with a cylinder head upper surface (8), and the cylinder head upper surface (8) is a flat surface used for connecting and installing a cylinder head cover.

5. The engine without intake manifold according to claim 1, characterized in that: A plurality of ignition coil mounting holes (9) are evenly arranged at the center position of the top of the engine cylinder head (1), a plurality of direct-drive tappet holes (10) are arranged at the top of the engine cylinder head (1), and the plurality of direct-drive tappet holes (10) are distributed on both sides of the ignition coil mounting hole (9), a plurality of spark plug mounting holes (11) are arranged at the bottom of the engine cylinder head, and an injector mounting hole (12) is installed at a position corresponding to the intake manifold inlet (3) at the bottom of the engine cylinder head.

6. The engine without intake manifold according to claim 1, characterized in that: An integrated exhaust manifold (13) is installed on the left side of the engine cylinder head (1); the integrated exhaust manifold (13) and the engine cylinder head (1) are designed as an integral whole; the left side of the integrated exhaust manifold (13) has a supercharger installation surface (14); and the side walls of the integrated exhaust manifold (13) are respectively provided with an integrated exhaust manifold lower air outlet (15) and an integrated exhaust manifold upper air outlet (16).

7. An engine without an intake manifold according to claim 2, characterized in that: An undercut structure (18) is installed on the inner wall of the throttle mounting flange (2).

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