气路.txt（Gas path.Txt）.doc

气路.txt（Gas path.Txt） In order to make some friends to now have a clear understanding of the overall gas path of heavy duty truck, I drew a gas diagram, for your reference A. pump; B. combination dryer assembly; C four circuit protection valve; G1. brake cylinder; G2. rear axle brake cylinder; G3. hand brake cylinder pressure gauge; I1.I2.; J. brake pump; N1.N2. brake chamber; M1. main brake relay valve; M2. hand brake relay valve M3.; gate valve; 01-04. (Dan Xiangfa) after the bridge combined brake chamber; P. hand brake valve; Q. trailer brake control valve; S1. Trailer Trailer brake control S2. charging connector; connector; R1. clutch booster button valve R2.; clutch booster cylinder; L1. pressure regulating valve (air filter regulator); L2. level gear shift valve (double H valve); L3. high grade working cylinder; low L4. L5. clutch working cylinder; brake control valve; L6. clutch brake cylinder; T1. wheel differential lock solenoid valve; T2. bridge wheel differential lock cylinder; T3. rear axle wheel differential lock cylinder U1.; inter axle differential lock solenoid valve; U2. axis differential lock cylinder; V1. extinguisher valve; V2. oil cylinder; V3. flameout working cylinder (exhaust brake valve); W1. horn solenoid valve; W2. air horn; X1. front drive gear switch; X2. front drive gear cylinder; power take-off electromagnetic switch Y1.; power take-off working cylinder Y2.; Y3. neutral working cylinder; Now let me introduce you to the work principle of the whole gas circuit. The first loop: compressed air through the outlet 21 continuous bridge G1 pneumatic brake cylinder, brake valve and G1 based J provides the front brake pressure, when the main brake valve (i.e. brake pump) when compressed air will lead to the front brake chamber of N1 and N2, the front wheel brake. Second loop: compressed air through the outlet 22 to the rear axle brake cylinder G2 pneumatic brake valve, G2 and J in the main axle brake control pressure for relay valve M1 working pr