Multi-cylinder self-charging system of CNG engine and self-charging method thereof

An engine, self-inflating technology, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve problems such as blanks, and achieve the effect of fast inflation, easy implementation, and small modification range.

Active Publication Date: 2019-03-26
武汉水善利科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research on CNG vehicles directly using natural gas for refueling is still blank

Method used

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  • Multi-cylinder self-charging system of CNG engine and self-charging method thereof
  • Multi-cylinder self-charging system of CNG engine and self-charging method thereof
  • Multi-cylinder self-charging system of CNG engine and self-charging method thereof

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Such as Figure 1~4 As shown, the CNG engine multi-cylinder self-inflating system designed by the present invention includes a CNG engine, a high-pressure CNG storage tank 2, a pressurized storage tank 3 and a connecting pipe network. CNG engine comprises cylinder and ECU, and described cylinder comprises cylinder intake valve 42, cylinder exhaust valve 43, cylinder head 44 and spark plug 45. The CNG engine is a six-cylinder engine, which are respectively called cylinders I to VI, and cylinders II, IV, and VI are refitted as air-filled cylinders 4; The inflatable cylinder 4 is provided with a cylinder closing device 6 , and the cylinder head 44 of the inflatable cylinder 4 is provided with an inflatable channel 5 . There are two pressurized storage tanks 3, which are called pressurized storage tank A and pressurized storage t...

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Abstract

The invention discloses a CNG engine multi-cylinder gas self-filling method. According to the method, at least two cylinders in a CNG engine serve as gas filling cylinders, the other cylinders serve as power cylinders, and the power cylinders operate normally to drive the gas filling cylinders so that the gas filling cylinders serve as piston compressor cylinders to compress civil natural gas and then fill a high-pressure CNG storage tank with the compressed civil natural gas. The invention further discloses a CNG engine multi-cylinder gas self-filling system which comprises the CNG engine, the high-pressure CNG storage tank, pressurizing storage tanks and a connecting pipe network, wherein the CNG engine comprises the cylinders and an ECU; the cylinders include at least two gas filling cylinders and a plurality of power cylinders; the gas filling cylinders are provided with cylinder closing devices and gas filling channels; pressure sensors are arranged on the high-pressure CNG storage tank and the pressurizing storage tanks and / or pipeline connected with the high-pressure CNG storage tank and the pressurizing storage tanks; and the cylinder closing devices, spark plugs, control valves and the pressure sensors are connected with the ECU respectively. The method and the system can be used for filling a CNG automobile with civil natural gas, have a small modification range, are easy to realize and have no influence on the performance of the CNG engine.

Description

technical field [0001] The invention relates to a CNG vehicle, in particular to a CNG engine multi-cylinder self-inflating system and a self-inflating method thereof. Background technique [0002] As a recognized clean energy, natural gas is listed as the three pillars of world energy alongside coal and oil. Due to the dwindling of oil resources, in order to alleviate the concerns of automobiles on the durability and durability of oil resources, hybrid vehicles such as gasoline and electricity, gasoline and natural gas have been developed and put into use. In recent years, the state has introduced some policies to support the development of the natural gas industry, encouraging and supporting vehicles and ships fueled by LNG and CNG. [0003] my country's natural gas resources are mainly concentrated in the west and offshore areas. On the one hand, cities near the gas source, such as Sichuan, Chongqing, Urumqi, Hainan, etc., have a large number of built gas filling stations...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D17/02F02B75/00
CPCF02B75/00F02D17/023
Inventor 邓义斌郑良焱王泽胜
Owner 武汉水善利科技有限责任公司
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