An engine intake system for a genset
By designing the generator set engine intake system, the combustion of gaseous fuel and air is ensured under stable atmospheric pressure, solving the problem of air-fuel ratio imbalance caused by unstable intake pressure and improving engine performance and lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING AMPRIDE POWER & MACHINERY CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-24
AI Technical Summary
Existing generator set engine intake systems have difficulty maintaining stable intake pressure under different operating conditions, leading to air-fuel ratio imbalance and affecting engine emission stability, performance, and lifespan.
A generator set engine intake system was designed, including a gaseous fuel intake system and an air intake system. The system is connected to the outside atmosphere through a pressure reducing valve and an air filter to ensure that the intake air volume is under stable atmospheric pressure, so as to achieve proportional combustion of gaseous fuel and air.
Maintaining stable air pressure at the intake end under any operating conditions ensures the proportional combustion of air and gaseous fuel, thereby improving engine performance and lifespan.
Smart Images

Figure CN224550252U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of generator technology, and in particular to an air intake system for a generator set engine. Background Technology
[0002] A generator set is a complete set of mechanical equipment that converts other forms of energy into electrical energy. It consists of a power system, control system, noise reduction system, vibration damping system, and exhaust system. Driven by a water turbine, steam turbine, diesel engine, or other power machinery, it converts energy from water flow, airflow, fuel combustion, or nuclear fission into mechanical energy, which is then transferred to the generator. The generator then converts this mechanical energy into electrical energy, which is output to electrical equipment. Generators have wide applications in industrial and agricultural production, national defense, science and technology, and daily life. In recent years, with technological advancements, lightweight and portable small generator sets have also begun to enter residents' daily lives as a superior choice for home emergency power and outdoor travel power.
[0003] Existing generator set engine intake systems have difficulty maintaining stable intake pressure under different operating conditions, leading to air-fuel ratio imbalance, which in turn affects engine emission stability, performance, and lifespan. Utility Model Content
[0004] This invention provides a generator set engine intake system, which aims to solve the problem that existing generator set engine intake systems are unable to maintain stable intake pressure under different operating conditions, leading to air-fuel ratio imbalance, and thus affecting engine emission stability, performance and lifespan.
[0005] This utility model is implemented as follows: a generator set engine air intake system includes: a generator set housing, an engine installed inside the generator set housing, a gas fuel air intake system installed on one side of the engine, and an air intake system installed on the top of the engine.
[0006] Preferably, the unit casing includes: a base plate, with a right side plate, a left side plate, a front side plate and a rear side plate arranged around the top of the base plate, the side plates being fixed together by columns, and a top cover being provided at the top.
[0007] The beneficial effect of adopting the above-mentioned further solutions is: for the installation of the engine unit and the protection of its internal structure.
[0008] Preferably, the gas fuel intake system includes: a pressure reducing valve sealing chamber, the pressure reducing valve sealing chamber is fixedly installed on the inner wall of the rear side plate, a pressure reducing valve is installed inside the pressure reducing valve sealing chamber, a gas pipe is provided on the pressure reducing valve, the pressure reducing valve is connected to the engine through the gas pipe, and a pressure reducing valve vent cover is provided on the outer wall of the rear side plate of the pressure reducing valve sealing chamber.
[0009] The beneficial effect of adopting the above-mentioned further solution is that it is used to balance the gas fuel intake volume, and the pressure reducing valve intake volume is kept at a stable atmospheric pressure.
[0010] Preferably, the air intake system includes: an air filter, the air filter being installed on the top of the engine, an air filter intake hose being provided on the air filter, an air filter intake chamber being provided at the end of the air filter intake hose away from the air filter and communicating with the interior of the air filter intake chamber, the air filter intake chamber being fixedly installed on the inner wall of the rear side panel, and an air filter intake shroud being installed on the outer wall of the rear side panel located on the air filter intake chamber.
[0011] The beneficial effect of adopting the above-mentioned further solution is that it helps to balance the air intake volume of the engine, and the air intake end of the air filter is always kept at a stable atmospheric pressure.
[0012] Preferably, the engine has an air intake port on the side near the right side panel, an engine air intake shroud is provided on the right side panel, and an engine exhaust shroud is provided on the left side panel.
[0013] The beneficial effects of adopting the above-mentioned further solutions are: it facilitates air intake for the engine through the engine air intake shroud, and the engine exhaust shroud facilitates air exhaust from the engine.
[0014] Preferably, the pressure reducing valve has an opening on one side of the sealing chamber, and the opening is fitted to the inner wall of the rear side plate.
[0015] The beneficial effect of adopting the above-mentioned further solution is to ensure the stability of its internal air pressure.
[0016] Preferably, the air filter has an opening on one side of the air inlet chamber, and the opening is attached to the inner wall of the rear side plate.
[0017] The beneficial effect of adopting the above-mentioned further solution is to ensure the stability of its internal air pressure.
[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a generator set engine intake system, which includes a gas fuel intake system with a pressure reducing valve vent cover connected to the outside atmosphere; and an air intake system with an air filter intake hose connected to the outside atmosphere. This design ensures that regardless of the generator set's operating conditions, the air filter intake and pressure reducing valve intake remain at a stable atmospheric pressure, ensuring that the air intake and gas fuel intake are burned in the designed proportions, thus improving engine performance and lifespan. Attached Figure Description
[0019] Figure 1This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 for Figure 1 Internal structure diagram (excluding top cover and side panels);
[0021] Figure 3 for Figure 2 A front view structural diagram;
[0022] Figure 4 for Figure 2 A schematic diagram of the side view structure;
[0023] Figure 5 for Figure 1 A side view structural diagram.
[0024] In the diagram: 1. Generator unit casing; 11. Base plate; 12. Right side plate; 13. Left side plate; 14. Front side plate; 15. Rear side plate; 16. Column; 17. Top cover; 2. Engine; 3. Gas fuel intake system; 31. Pressure reducing valve sealing chamber; 32. Pressure reducing valve; 33. Gas pipe; 34. Pressure reducing valve vent cover; 4. Air intake system; 41. Air filter; 42. Air filter intake hose; 43. Air filter intake chamber; 44. Air filter intake hood; 5. Engine air inlet; 6. Engine air intake hood; 7. Engine exhaust hood. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0026] Please see Figure 1-5 This utility model provides a technical solution for a generator set engine air intake system: a generator set engine air intake system includes: a generator set housing 1, an engine 2 installed inside the generator set housing 1, a gas fuel air intake system 3 installed on one side of the engine 2, and an air intake system 4 installed on the top of the engine 2.
[0027] In this embodiment, a gas fuel intake system 3 is provided to balance the gas fuel intake volume. The gas fuel intake design includes a pressure reducing valve 32 with a pressure reducing valve vent 34, which is connected to the outside atmosphere. An air intake system 4 is provided to balance the engine air intake volume. The air intake design includes an air filter 41 with its intake end connected to the outside atmosphere via an air filter intake hose 42. This design ensures that the air filter 41 and the pressure reducing valve 32 intake ends remain at a stable atmospheric pressure regardless of the generator set's operating conditions, ensuring that the air intake volume and gas fuel intake volume can be burned in the designed proportion, thereby improving engine performance and lifespan.
[0028] Furthermore, the unit casing 1 includes: a base plate 11, with a right side plate 12, a left side plate 13, a front side plate 14 and a rear side plate 15 arranged around the top of the base plate 11. The side plates are fixed together by columns 16, and the top is covered by a top cover 17.
[0029] In this embodiment, an engine housing 1 is provided for the installation of the engine assembly and the protection of its internal structure.
[0030] Typically, the gas fuel intake system 3 includes: a pressure reducing valve sealing chamber 31, which is fixedly installed on the inner wall of the rear side plate 15. A pressure reducing valve 32 is installed inside the pressure reducing valve sealing chamber 31. A gas pipe 33 is provided on the pressure reducing valve 32. The pressure reducing valve 32 is connected to the engine 2 through the gas pipe 33. A pressure reducing valve vent cover 34 is provided on the outer wall of the rear side plate 15 of the pressure reducing valve sealing chamber 31.
[0031] In this embodiment, a gas fuel intake system 3 is provided to balance the gas fuel intake volume. The gas fuel intake system 3 includes a pressure reducing valve sealing chamber 31. A pressure reducing valve 32 is installed in the pressure reducing valve sealing chamber 31. The pressure reducing valve 32 is connected to the combustion chamber of the engine 2 through a gas pipe 33. The gas fuel enters the combustion chamber of the engine 2 after being depressurized by the pressure reducing valve 32. The pressure reducing valve 32 is designed with a pressure reducing valve vent 34, which is used to ventilate with the outside air. It can also be replaced by a pipe or directly connected to the outside atmosphere to ensure that the intake volume of the pressure reducing valve 32 is maintained at a stable atmospheric pressure.
[0032] Specifically, the air intake system 4 includes an air filter 41, which is installed on the top of the engine 2. An air filter intake hose 42 is provided on the air filter 41. An air filter intake chamber 43 is provided at the end of the air filter intake hose 42 away from the air filter 41 and is connected to the inside of the air filter intake chamber 43. The air filter intake chamber 43 is fixedly installed on the inner wall of the rear side plate 15. An air filter intake cover 44 is installed on the outer wall of the rear side plate 15 located on the outer side of the air filter intake chamber 43.
[0033] In this embodiment, an air intake system 4 is provided to balance the air intake volume of the engine. The air intake system 4 includes an air filter 41, which is installed on the mixer valve body of the engine 2. The air filter 41 is designed with an air filter element inside. The air intake end of the air filter 41 is connected to the outside atmosphere through the air filter intake hose 42. After passing through the air filter element, the air reaches the combustion chamber. The air intake end of the air filter 41 is always kept at a stable atmospheric pressure.
[0034] In addition, an engine air intake 5 is provided on the side of the engine 2 near the right side plate 12, an engine air intake shroud 6 is provided on the right side plate 12, and an engine exhaust shroud 7 is provided on the left side plate 13.
[0035] In this embodiment, an engine air intake 5 is provided on one side of the engine 2, wherein the engine air intake 5 and the inside of the unit housing 1 form an engine air intake chamber. An engine air intake shroud 6 is installed on the right side plate 12 near the engine 2 to facilitate air intake for the engine 2 through the engine air intake shroud 6. An engine exhaust shroud 7 is provided on the left side plate 13 to facilitate exhaust of air from the engine.
[0036] Additionally, the pressure reducing valve sealing chamber 31 has an opening on one side, which fits against the inner wall of the rear side plate 15.
[0037] In this embodiment, by setting a pressure reducing valve sealing chamber 31, and by fitting the pressure reducing valve sealing chamber 31 against the inner wall of the rear side plate 15, an internal seal is formed to prevent internal engine gas from entering the pressure reducing valve sealing chamber 31, while ensuring that the intake air does not interfere with the airflow at other locations, thus ensuring stable internal air pressure.
[0038] It should be noted that the air filter intake chamber 43 has an opening on one side, which is attached to the inner wall of the rear side panel 15.
[0039] In this embodiment, by setting an air filter intake chamber 43, and by fitting the air filter intake chamber 43 against the inner wall of the rear side plate 15 to form an internal seal, the internal gas of the engine is prevented from entering the air filter intake chamber 43, while ensuring that the intake air does not interfere with the airflow at other locations, thus ensuring stable internal air pressure.
[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An air intake system for a generator set engine, characterized in that: Includes: a unit housing (1), an engine (2) installed inside the unit housing (1), a gas fuel intake system (3) installed on one side of the engine (2), and an air intake system (4) installed on the top of the engine (2).
2. The generator set engine intake system according to claim 1, characterized in that: The unit casing (1) includes: a base plate (11), and a right side plate (12), a left side plate (13), a front side plate (14) and a rear side plate (15) are arranged around the top of the base plate (11). The side plates are fixed together by columns (16), and the top is covered by a top cover (17).
3. The generator set engine intake system according to claim 2, characterized in that: The gas fuel intake system (3) includes: a pressure reducing valve sealing chamber (31), which is fixedly installed on the inner wall of the rear side plate (15). A pressure reducing valve (32) is installed inside the pressure reducing valve sealing chamber (31). A gas pipe (33) is provided on the pressure reducing valve (32). The pressure reducing valve (32) is connected to the engine (2) through the gas pipe (33). A pressure reducing valve vent cover (34) is provided on the outer wall of the rear side plate (15) of the pressure reducing valve sealing chamber (31).
4. The generator set engine intake system according to claim 2, characterized in that: The air intake system (4) includes: an air filter (41) installed on the top of the engine (2), an air filter intake hose (42) provided on the air filter (41), an air filter intake chamber (43) provided at one end of the air filter intake hose (42) away from the air filter (41) and connected to the interior of the air filter intake chamber (43), the air filter intake chamber (43) is fixedly installed on the inner wall of the rear side plate (15), and an air filter intake cover (44) is installed on the outer wall of the rear side plate (15) located on the outer side of the air filter intake chamber (43).
5. The generator set engine intake system according to claim 2, characterized in that: The engine (2) has an engine air inlet (5) on the side near the right side plate (12), an engine air intake shroud (6) is provided on the right side plate (12), and an engine exhaust shroud (7) is provided on the left side plate (13).
6. The generator set engine intake system according to claim 3, characterized in that: The pressure reducing valve sealing chamber (31) has an opening on one side, and the opening is attached to the inner wall of the rear side plate (15).
7. The generator set engine intake system according to claim 4, characterized in that: The air filter intake chamber (43) has an opening on one side, which is attached to the inner wall of the rear side plate (15).