A kind of carry range-extending gas engine

Abstract

This utility model discloses a range-extended gas engine. A crankshaft torsional damper is located at the front end of the engine body, and a torsional damper flywheel is located at the rear end. A three-way catalytic converter aftertreatment system is also installed on the outside of the engine body. An intake pipe and a gas distribution chamber are installed on the top of the engine body. The intake pipe is located on one side of the gas distribution chamber and is connected to it. An organic water inlet pipe is also installed on the engine body. The beneficial effects of this utility model are: using a dual-fuel engine, combining the cleanliness of natural gas and the high thermal energy characteristics of gasoline, achieving optimized efficiency, reduced emissions, and environmental protection, making emissions cleaner, eliminating the need for a particulate matter filter aftertreatment device, and saving material costs. Through the implementation of energy-saving and lightweight measures, energy-saving effects are achieved, with a minimum gas consumption rate of 220g / kWh; after implementation, the minimum gas consumption rate is 210g / kWh.

Description

Technical Field

[0001] This utility model relates to range-extended engines, and more particularly to a range-extended gas engine. Background Technology

[0002] With increasing environmental awareness and increasingly stringent emission regulations, traditional gasoline-powered vehicles struggle to meet the stringent emission standards of Euro 7 and China VI b. Emerging alternative fuel technologies are beginning to emerge in the engine field. Pure electric vehicles, limited by battery range, are ill-suited for long-distance transportation. Therefore, in the crucial path of transitioning from traditional gasoline-powered vehicles to new energy sources, a range-extended gas turbine engine assembly that combines the advantages of electric vehicles, environmentally friendly fuels, and traditional fuel technologies offers a solution to the energy crisis while meeting environmental requirements, especially before breakthroughs in pure electric technology. To further address energy conservation and emission reduction, more efficient, energy-saving, and lightweight measures for the engine assembly have been proposed, maximizing environmental and energy-saving benefits. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a range-extended gas engine.

[0004] The purpose of this utility model is achieved through the following technical solution: a range-extended gas engine, including an engine body, a crankshaft torsional damper is provided at the front end of the engine body, a torsional damper flywheel is provided at the rear end of the engine body, a three-way catalytic converter aftertreatment system is also installed on the outside of the engine body, an intake pipe and a gas distribution chamber are installed on the top of the engine body, the intake pipe is located on one side of the gas distribution chamber and is connected to the gas distribution chamber, and an engine body water inlet pipe is also provided on the engine body.

[0005] Optionally, an engine bracket is also provided on the bottom outer side of the engine body.

[0006] Optionally, the distance from the exhaust port of the engine body to the inlet of the three-way catalytic converter aftertreatment system is less than 150mm.

[0007] Optionally, the intake manifold has four intake manifolds, and the nozzles of the gas distribution chamber are respectively installed on the four intake manifolds.

[0008] Optionally, the torsional damper flywheel weighs less than 15 kg.

[0009] Optionally, the engine body adopts a dual-fuel system of natural gas and gasoline, with a displacement of 1.99L, a maximum output power of 130KW, and an output torque of 360N.m.

[0010] This utility model has the following advantages: It is equipped with a range-extended gas engine, using a dual-fuel engine that combines the cleanliness of natural gas with the high thermal energy characteristics of gasoline, achieving optimized efficiency, reduced emissions, and environmental friendliness. This results in cleaner emissions and eliminates the need for a particulate matter filter after-treatment device, saving material costs. The elimination of belt-driven accessories improves mechanical transmission efficiency. Through the implementation of energy-saving and lightweight measures, energy savings are achieved. Before use, the minimum gas consumption rate was 220g / kWh; after use, the minimum gas consumption rate is 210g / kWh. Attached Figure Description

[0011] Figure 1 This is an axonometric view of the front end of a gas engine assembly structure equipped with a range extender according to this utility model. Figure 2 This is an axonometric view of the rear end of a gas engine assembly structure equipped with a range extender according to this utility model. Figure 3 This is a schematic diagram of the intake manifold component of a gas engine assembly equipped with a range extender according to this utility model; In the diagram, 1-engine body, 101-crankshaft torsional damper, 102-engine body water inlet pipe, 103-engine bracket, 104-three-way catalytic converter aftertreatment system, 105-intake pipe, 106-gas distribution chamber, 107-torsional damper flywheel. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0013] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0015] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] like Figure 1 and Figure 2 As shown, a range-extended gas engine includes an engine body 1. A crankshaft torsional damper 101 is provided at the front end of the engine body 1. The accessories of the relatively inefficient belt drive method are eliminated at the front end of the engine, and only the crankshaft torsional damper 101 is retained to balance the energy of crankshaft rotational vibration, which can reduce the mechanical loss of the engine and reduce energy consumption.

[0019] In this embodiment, as Figure 1 and Figure 2 As shown, a torsional damper flywheel 107 is provided at the rear end of the engine body 1. The torsional damper flywheel 107 is a lightweight torsional damper flywheel 107, weighing less than 15 kg. The use of the torsional damper flywheel 107 at the rear output can balance the torque fluctuation between the drive motor and the engine power during the engine start-stop process, avoid increasing the motor load and save energy.

[0020] In this embodiment, as Figure 1 and Figure 2As shown, a three-way catalytic converter aftertreatment system 104 is also installed on the outside of the engine body 1. The distance from the exhaust port of the engine body 1 to the inlet of the three-way catalytic converter aftertreatment system 104 is less than 150mm. While meeting the China VI emission standards, it also minimizes the distance from the exhaust pipe to the three-way catalytic converter aftertreatment system 104, thereby reducing heat loss during the catalytic process.

[0021] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, an intake pipe 105 and a gas distribution chamber 106 are installed on the top of the engine body 1. The intake pipe 105 is located on one side of the gas distribution chamber 106 and is connected to the gas distribution chamber 106. The intake pipe 105 is made of high-strength, low-density PA6 material to achieve component weight reduction. The intake pipe 105 has four intake manifolds. The nozzles of the gas distribution chamber 106 are respectively installed on the four intake manifolds. The nozzles are distributed at the intake manifold inlet of each cylinder head to ensure that the gas enters each working cylinder efficiently and evenly, thereby achieving high working efficiency.

[0022] In this embodiment, as Figure 1 and Figure 2 As shown, an engine body 1 is also equipped with an engine body water inlet pipe 102. The range-extended vehicle's overall thermal management system can provide coolant distribution. By eliminating the mechanical water pump and retaining only the engine body water inlet pipe 102, the mechanical consumption of the engine body 1 can be reduced, thus achieving energy saving.

[0023] In this embodiment, as Figure 1 and Figure 2 As shown, an engine bracket 103 is also provided on the bottom outer side of the engine body 1. The engine bracket 103 is used to support the engine body 1 and is used to install on the vehicle body.

[0024] In this embodiment, the engine body 1 adopts a dual-fuel system of natural gas and gasoline, with a displacement of 1.991L, a maximum output power of 130KW, and an output torque of 360N.m. The engine body 1 is a dual-fuel system of natural gas and gasoline, which combines the cleanliness of natural gas and the high thermal energy characteristics of gasoline to achieve the effects of optimized efficiency, reduced emissions, and green environmental protection.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A gas engine equipped with a range extender, characterized in that: The engine includes an engine body, a crankshaft torsional damper is provided at the front end of the engine body, a torsional damper flywheel is provided at the rear end of the engine body, a three-way catalytic converter aftertreatment system is also installed on the outside of the engine body, an intake pipe and a gas distribution chamber are installed on the top of the engine body, the intake pipe is located on one side of the gas distribution chamber and is connected to the gas distribution chamber, and an engine body water inlet pipe is also provided on the engine body.

2. The range-extended gas engine according to claim 1, characterized in that: An engine bracket is also provided on the bottom outer side of the engine body.

3. A range-extended gas engine according to claim 2, characterized in that: The distance from the exhaust port of the engine body to the inlet of the three-way catalytic converter aftertreatment system is less than 150mm.

4. A range-extended gas engine according to claim 3, characterized in that: The intake pipe has four intake manifolds, and the nozzles of the gas distribution chamber are respectively installed on the four intake manifolds.

5. A range-extended gas engine according to claim 4, characterized in that: The flywheel of the torsional damper weighs less than 15 kg.

6. A range-extended gas engine according to claim 5, characterized in that: The engine body adopts a dual-fuel system of natural gas and gasoline, with a displacement of 1.99L, a maximum output power of 130KW, and an output torque of 360N.m.

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