CN103511126A

CN103511126A - Natural gas engine for fork truck

Info

Publication number: CN103511126A
Application number: CN201310507893.4A
Authority: CN
Inventors: 薛峰
Original assignee: GUANGQING (ANHUI) GAS TECHNOLOGIES Co Ltd
Current assignee: GUANGQING (ANHUI) GAS TECHNOLOGIES Co Ltd
Priority date: 2013-10-24
Filing date: 2013-10-24
Publication date: 2014-01-15

Abstract

The invention belongs to the field of engine design and manufacturing, and in particular relates to a natural gas engine for a fork truck refitted from a gasoline engine. The natural gas engine comprises a gasoline engine assembly, wherein an air filter of the gas engine and a natural gas source are both connected with a mixer; an output pipeline of the mixer is connected with an air inlet of a piston cylinder of the gasoline engine. According to the invention, the structure of an original gasoline engine is adopted, the utilizable part is preserved, and the fuel supply pipeline is refitted, so that the natural gas engine is obtained.

Description

Fork truck natural gas engine

Technical field

The invention belongs to engine design and manufacture field, be specifically related to a kind of fork truck natural gas engine that utilizes petrol engine to convert.

Background technique

Fork truck is requisite engineering vehicle in many manufacturing types enterprise, because fork truck will be through the indoor work of carrying out of being everlasting, thereby the tail gas that motor produces can directly be discharged in factory building, serious threat is to workpeople's health, the pollution causing in order to reduce fork truck exhaust emissions, people have expected utilizing some low-carbon (LC) fuel to replace gasoline, the traditional fuels such as diesel oil, rock gas is exactly to be commonly used low-carbon (LC) fuel present stage, yet because gaseous fuel and liquid fuel are in the difference aspect physical property, gaseous fuel can not be applicable to liquid fuel motor completely, if but a kind of fork truck natural gas engine is manufactured in simple redesign, will greatly raise the cost, be unfavorable for the universal of rock gas fork truck.

Summary of the invention

The object of this invention is to provide a kind of fork truck natural gas engine that can utilize regular gasoline engine modification to form.

For achieving the above object, the invention provides following technological scheme: a kind of fork truck natural gas engine, comprise a petrol engine assembly, the air filter of described petrol engine is connected with a mixer jointly with the source of the gas of rock gas, and the output pipe of mixer is connected with the air inlet of piston of gasoline engine cylinder.

Technique effect of the present invention is: in conjunction with original petrolic self structure, can utilize part retain and fuel supply pipe road is transformed, and become gas combustion motor.

Accompanying drawing explanation

Fig. 1 is plan view of the present invention;

Fig. 2 is plan view of the present invention;

Fig. 3 is schematic diagram of the present invention.

Embodiment

As shown in Figure 1, 2, 3, a kind of fork truck natural gas engine, comprise a petrol engine assembly, the air filter 60 of described petrol engine and the source of the gas 50 of rock gas are connected with a mixer 10 jointly, and the output pipe of mixer 10 is connected with the air intake duct 71 of piston of gasoline engine cylinder 70.Technological scheme of the present invention is mainly the fuel method of supplying that has changed internal-combustion engine, by original petrolic spray bar sealing, fuel is supplied with to change into from air intake duct 71 by original spray bar and directly in sucker cylinder 70, can be made again it adapt to the physical property of gaseous fuel when making full use of petrol engine original structure together with air fuel.

As shown in Figure 1,3, pipeline between the source of the gas 50 of mixer 10 and rock gas is provided with reduction valve 20, pipeline between described reduction valve 20 and mixer 10 is provided with flow control valve 30, described flow control valve 30 is manual modulation valve, and the pipeline between described reduction valve 20 and source of the gas 50 is provided with stop valve 40.Therefore fuel pressure in source of the gas 50 is higher, will reduce pressure by 20 pairs of fuel of reduction valve, and post-decompression fuel feedback flow control valve 30 and mixer 10 regulate the mixed proportion of itself and air, and final mixed gas enters and in piston cylinder 70, carries out detonation.

As shown in Figure 1, 2, between the air intake duct 71 of mixer 10 and piston cylinder 70, by sebific duct 12, be connected, the outlet of mixer 10 is connected by transit joint 11 with sebific duct 12.Because the air inlet bore of variety classes petrol engine is different, need to connect with transit joint 11 air inlet of mixer 10 air outlet and piston cylinder 70, the internal diameter of transit joint 11 is got both interface the grater to guarantee intake efficiency.

As shown in Figure 2, mounting bracket 21 is housed on petrol engine, described reduction valve 20 is fixedly connected with mounting bracket 21, and described stop valve 40 is solenoid valve, and stop valve 40 is connected with reduction valve 20 by copper pipe, and the control circuit of stop valve 40 is connected with vehicle power.Support 21 mainly plays the effect of fixed decompression valve 20, and support 21 should be arranged on the position that does not affect other functional structures of car body on motor.

In the installation process of whole pipeline, must guarantee that each seam strictly seals, after having reequiped, to carry out tightness detection to guarantee its Security to air inlet pipeline.

Claims

1. a fork truck natural gas engine, comprise a petrol engine assembly, it is characterized in that: the source of the gas (50) of the air filter of described petrol engine (60) and rock gas is connected with a mixer (10) jointly, and the output pipe of mixer (10) is connected with the air intake duct (71) of piston of gasoline engine cylinder (70).

2. fork truck natural gas engine according to claim 1, it is characterized in that: the pipeline between the source of the gas (50) of described mixer (10) and rock gas is provided with reduction valve (20), pipeline between described reduction valve (20) and mixer (10) is provided with flow control valve (30), described flow control valve (30) is manual modulation valve, and the pipeline between described reduction valve (20) and source of the gas (50) is provided with stop valve (40).

3. fork truck natural gas engine according to claim 2, it is characterized in that: between the air intake duct (71) of described mixer (10) and piston cylinder (70), by sebific duct (12), be connected, the outlet of mixer (10) is connected by transit joint (11) with sebific duct (12).

4. fork truck natural gas engine according to claim 3, it is characterized in that: mounting bracket (21) is housed on described petrol engine, described reduction valve (20) is fixedly connected with mounting bracket (21), described stop valve (40) is solenoid valve, stop valve (40) is connected with reduction valve (20) by copper pipe, and the control circuit of stop valve (40) is connected with vehicle power.