CN205243679U

CN205243679U - Two gas air feed structures of CNG and LNG

Info

Publication number: CN205243679U
Application number: CN201521023844.4U
Authority: CN
Inventors: 谢剑波; 魏忠宣; 肖乐; 杨兵
Original assignee: SAIC Iveco Hongyan Commercial Vehicle Co Ltd
Current assignee: SAIC Hongyan Automotive Co Ltd
Priority date: 2015-12-11
Filing date: 2015-12-11
Publication date: 2016-05-18
Anticipated expiration: 2025-12-11

Abstract

The utility model provides a two gas air feed structures of CNG and LNG, including CNG air supply line, high -pressure pressure reducer, LNG air supply line, low pressure regulator, three way connection, engine air supply line and support, the support is a door shape structure, and two stabilizer blades are fixed on the heavy truck frame, the top one end fixedly connected with high pressure pressure reducer of two stabilizer blades, and the other end is connected with the low pressure regulator, CNG air supply line is connected to the air inlet pipeline of high pressure pressure reducer, and three way connection's pressure connection I is connected to the pipeline of giving vent to anger, LNG air supply line is connected to the air inlet pipeline of low pressure regulator, and three way connection's pressure connection II is connected to the pipeline of giving vent to anger, three way connection's the articulate engine air supply line that gives vent to anger. The utility model discloses an useful technological effect can use CNG and LNG as natural gas engine fuel simultaneously, has enlarged natural gas heavy truck's application scope, is favorable to natural gas heavy truck to popularize and apply.

Description

The two gas supply structures of CNG and LNG

Technical field

The utility model relates to CNG and the two gas supply technology of LNG, specially refers to the two gas supply structures of a kind of CNG and LNG.

Background technology

Along with the implementation dynamics of new " Law on Environmental Protection " and the Air Pollution Prevention Law is increasing, clean energy resource is one of better selection solving vehicular emission. At present, heavy truck is is mostly to adopt natural gas as clean energy resource, makes its discharge reach the discharge standard of state 4 and state B5. And the cost ratio diesel oil of natural gas is relatively low, user can obtain larger improvement with car cost. At present, main adopt be liquefied natural gas LNG and compressed natural gas CNG as motor vehicle fuel, LNG is because manufacture process needs deep cooling, price is relatively high; LNG gas station is less, and regional skewness weighing apparatus. CNG source of the gas reserves are abundant, but source of the gas guarantee in region is inhomogeneous. And heavy truck is mainly as long-distance transport instrument, need to travel in China, this is for adopting LNG or the CNG gas-fueled vehicles as fuel, and adding natural gas injection becomes a more scabrous problem. Although sometimes have LNG or CNG to add, because own vehicle can only use CNG or LNG, have to abandon the LNG that annotates, or CNG. Obviously, prior art natural gas heavy truck exists and can only use CNG or LNG as fuel, can not both the problem such as can use.

Summary of the invention

Can only use CNG or LNG as fuel for what solve that prior art natural gas heavy truck exists, can not both the problem such as can use, the utility model proposes the two gas supply structures of a kind of CNG and LNG. The two gas supply structures of the utility model CNG and LNG are arranged on natural gas engine front end, comprise CNG supply air line, high pressure relief device, LNG supply air line, low-pressure regulator, three-way connection, engine supply air line and bearing; Described bearing is portal structures, and two legs are fixed on heavy truck frames, and one end, top of two legs is fixedly connected with high pressure relief device, and the other end is connected with low-pressure regulator; The air inlet pipeline of high pressure relief device connects CNG supply air line, the inlet suction port I of outlet pipe connecting tee joint; The air inlet pipeline of low-pressure regulator connects LNG supply air line, the inlet suction port II of outlet pipe connecting tee joint; The air outlet adapter connecting engine supply air line of three-way connection.

The useful technique effect of the two gas supply structures of the utility model CNG and LNG is to use at the same time CNG and LNG as natural gas engine fuel, has expanded the scope of application of natural gas heavy truck, is conducive to natural gas heavy truck and applies.

Brief description of the drawings

Accompanying drawing 1 is the schematic diagram of the utility model CNG and the two gas supply structures of LNG.

Below in conjunction with drawings and the specific embodiments, the utility model CNG and the two gas supply structures of LNG are further described.

Detailed description of the invention

Accompanying drawing 1 is the schematic diagram of the utility model CNG and the two gas supply structures of LNG, and in figure, 1 is CNG supply air line, and 2 is LNG supply air line, and 3 is bearing, and 4 is low-pressure regulator, and 5 is high pressure relief device, and 6 is three-way connection, and 7 is engine supply air line. As seen from the figure, the two gas supply structures of the utility model NG and LNG are arranged on natural gas engine front end, comprise CNG supply air line 1, high pressure relief device 5, LNG supply air line 2, low-pressure regulator 4, three-way connection 6, engine supply air line 7 and bearing 3; Described bearing 3 is portal structures, and two legs are fixed on heavy truck frames, and one end, top of two legs is fixedly connected with high pressure relief device 5, and the other end is connected with low-pressure regulator 4; The air inlet pipeline of high pressure relief device 5 connects CNG supply air line 1, the inlet suction port I of outlet pipe connecting tee joint 6; The air inlet pipeline of low-pressure regulator 4 connects LNG supply air line 2, the inlet suction port II of outlet pipe connecting tee joint 6; The air outlet adapter connecting engine supply air line 7 of three-way connection 6. The two gas supply structure assemblies of the utility model CNG and LNG use CNG and LNG as the required high pressure relief system of fuel and low pressure regulating system, make CNG and LNG all can, in the fuel scope of application of same heavy truck, be conducive to applying of natural gas heavy truck.

Obviously, the useful technique effect of the two gas supply structures of the utility model CNG and LNG is to use at the same time CNG and LNG as natural gas engine fuel, has expanded the scope of application of natural gas heavy truck, is conducive to natural gas heavy truck and applies.

Claims

1. the two gas supply structures of CNG and LNG, is characterized in that, this structure is arranged on natural gas engine front end, comprises CNG supply air line, high pressure relief device, LNG supply air line, low-pressure regulator, three-way connection, engine supply air line and bearing; Described bearing is portal structures, and two legs are fixed on heavy truck frames, and one end, top of two legs is fixedly connected with high pressure relief device, and the other end is connected with low-pressure regulator; The air inlet pipeline of high pressure relief device connects CNG supply air line, the inlet suction port I of outlet pipe connecting tee joint; The air inlet pipeline of low-pressure regulator connects LNG supply air line, the inlet suction port II of outlet pipe connecting tee joint; The air outlet adapter connecting engine supply air line of three-way connection.