CN2420432Y

CN2420432Y - Start idling valve for liquified gaspressure regulator for automobile

Info

Publication number: CN2420432Y
Application number: CN 00204087
Authority: CN
Inventors: 孙喜洲
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-03-31
Filing date: 2000-03-31
Publication date: 2001-02-21
Anticipated expiration: 2010-03-31

Abstract

The utility model relates to a starting idling valve for a liquified gas pressure regulator for an automobile, which belongs to the improvement of a liquefied gas pressure reducing valve for the automobile. A valve seat of a starting idling valve with a gas inlet and an exhaust hole is arranged on a shell body of a secondary pressure reducing chamber of the pressure reducing valve; the gas inlet thererof is communicated with an exhaust passage of a primary pressure reducing chamber; a valve core is arranged in a gas chamber of the valve seat; a gas inlet is arranged in the center of the valve core; an exhaust hole is arranged on the valve seat for communicating the gas chamber and the secondary pressure reducing chamber; a diaphragm controlled by a spring is arranged in a valve cover of a via hole, forming a vacuum chamber; a valve matched with a gas inlet seat of the valve core is fixedly connected with the lower part of the diaphragm. The sensitivity for regulating pressure is high; the gas supply is timely; the starting of an engine is convenient.

Description

Automobile is with the starting idle valve of pressure controlling of liquefied gas device

The utility model belongs to liquefied petroleum gas (LPG) makes the improvement, particularly automobile of the pressure regulator that the motor car engine of fuel the uses starting idle valve with the pressure controlling of liquefied gas device.

In order to protect urban environment, reduce the pollution of the discharging of automobile to environment, progressively promoting the automobile improvement of single gasoline as fuel one-tenth at present can be fuel with gasoline both, can use the dual-fuel automobile of liquefied petroleum gas (LPG) as fuel again.The key device that gasoline car is transformed into dual-fuel automobile is the liquid gas pressure reducing regulator, and its structure is spring controlled diaphragm second depressurized valve, uses through post-decompression liquid gas access to engine.Its deficiency is that the pressure adjusting sensitivity of its idle valve is relatively poor, and the tolerance that provides is untimely, and air demand is inaccurate, makes the starting performance of automobile poor.

The purpose of this utility model is to provide the starting idle valve of a kind of automobile with the pressure controlling of liquefied gas device, can improve pressure controlled sensitivity, and air feed is timely, and air demand is accurate, is convenient to car engine start.

The utility model is achieved in that the starting idle valve of a kind of automobile with the pressure controlling of liquefied gas device, comprise the second depressurized valve that is provided with intake duct and air outlet flue, the valve seat that has the starting idle valve of inlet hole and exhaust port is installed on the housing of underpressure chamber, the reduction valve second level, its inlet hole communicates with the air outlet flue of a underpressure chamber, the spool that the center has inlet hole is installed in the air chamber of valve seat, on valve seat, be provided with the exhaust port that air chamber communicates with underpressure chamber, the second level, spring controlled diaphragm is installed in being provided with the valve gap of through hole constitutes vacuum chamber, affixed the valve that matches with spool inlet hole seat in the bottom of diaphragm.

Through hole on the utility model valve gap is communicated with vacuum line, when engine start, produce degree of vacuum, pass to vacuum chamber by vacuum line, under the effect of degree of vacuum, diaphragm, spring are compressed, valve that the diaphragm bottom is affixed and inlet hole seat are separated, inlet hole is opened, and liquid gas enters air chamber and enters the secondary underpressure chamber by exhaust port, and supplies engine start by pipeline.Because the utility model is installed on the second depressurized valve housing, diaphragm is not subjected to the influence of second depressurized valve chamber internal air pressure independently between air chamber and the vacuum chamber, therefore pressure controlled highly sensitive, air feed is timely, and air demand is accurate, is convenient to the starting of motor car engine.

Accompanying drawing is a structural representation of the present utility model

Below in conjunction with accompanying drawing the utility model is further described, a kind of automobile is with the starting idle valve of pressure controlling of liquefied gas device, comprise the second depressurized valve that is provided with intake duct 17 and air outlet flue 16, the valve seat 2 that has the starting idle valve of inlet hole 14 and exhaust port 3 is installed on the housing of underpressure chamber, the reduction valve second level 1, its inlet hole 14 communicates with the air outlet flue 18 of a underpressure chamber 19, the spool 5 that the center has inlet hole is installed in the air chamber 4 of valve seat 2, spool 5 is installed in the valve seat air chamber 4 by screw thread, and communicate with inlet hole 14, has annular rib 12 around the top inlet hole seat of spool 5, on annular rib 12, be evenly equipped with horizontal through hole 11, on valve seat 2, be provided with the exhaust port 3 that air chamber 4 communicates with underpressure chamber, the second level 1, the diaphragm 9 of spring 8 controls is installed in the valve gap 13 that is provided with through hole 7, and constitute vacuum chamber 10, affixed the valve 6 that matches with spool 5 inlet hole seats in the bottom of diaphragm 9.In valve seat 2 sidepieces and adjusting screw that inlet hole 14 communicates head is installed and has the awl point, afterbody is installed with the regulating valve stem 15 of seal ring, and the depth that regulating valve stem 15 screws in the screws reaches the purpose of regulating the air inflow size.

Claims

1. an automobile is with the starting idle valve of pressure controlling of liquefied gas device, comprise the second depressurized valve that is provided with intake duct (17) and air outlet flue (16), the valve seat (2) that it is characterized in that having the starting idle valve of inlet hole (14) and exhaust port (3) is installed on the housing of underpressure chamber, the reduction valve second level (1), its inlet hole (14) communicates with the air outlet flue (18) of a underpressure chamber (19), the spool (5) that the center has inlet hole is installed in the air chamber (4) of valve seat (2), on valve seat (2), be provided with the exhaust port (3) that air chamber (4) communicates with underpressure chamber, the second level (1), the diaphragm (9) that spring (8) control is installed in the valve gap that is provided with through hole (7) (13) constitutes vacuum chamber (10), affixed the valve (6) that matches with spool (5) inlet hole seat in the bottom of diaphragm (9).

2. automobile according to claim 1 is with the starting idle valve of pressure controlling of liquefied gas device, it is characterized in that spool (5) is installed in the valve seat air chamber (4) by screw thread, and communicate with inlet hole (14), have annular rib (12) around the top inlet hole seat of spool (5), on annular rib (12), be evenly equipped with horizontal through hole (11).

3. automobile according to claim 1 is with the starting idle valve of pressure controlling of liquefied gas device, it is characterized in that in valve seat (2) sidepiece and adjusting screw that inlet hole (14) communicates head being installed has the awl point, and afterbody is installed with the regulating valve stem (15) of seal ring.