Fuel Injector

Because there are many kinds of spare parts, we can’t display them all on the website. Please feel free to contact us for specific ones.

advantage

1. We supply both original and aftermarket products for you
2. From the manufacturer to the customer directly, saving your cost
3. Stable stock for normal parts
4. In Time Delivery Time, with competitive shipping cost
5. Professional and on time after service

packing

Carton Boxes, or according to clients’ request.

description

Diesel injector functional is a kind of high-pressure fuel to diesel engine combustion chamber injection device. According to different requirements of diesel engine, the high-pressure oil pump to diesel oil mist, with a certain amount of injection pressure, spray fineness, fuel injection law, range and the spray cone Angle of spray into the combustion chamber a particular location, mixed with an air combustion. With high quality bearing steel, the reciprocal sliding cylinder clearance of only 0.001 mm to 0.0025 mm, by high precision machining and grinding matching, swap of diesel injector nozzle is different. The gap is too big, which can make the injection pressure drop, spray quality variation; The gap is too small, the needle valve easily jammed. Needle valve in the middle of the circular cone (pressure cone), the annular oil cavity 12 needle valve body, its effect is produced by oil pressure under axial thrust, the needle valve. Of the bottom of the needle valve cone (seal) to match the needle valve body, a sealed fuel injector lumen.Needle valve upper convex shoulder, when the needle valve closing, convex shoulder and the injector body bottom surface distance h for the needle valve lift, the biggest its size determines the injection volume how many, generally h 0.4 mm to 0.5 mm. Needle valve body with the injector body junction 1-2 positioning pin 8 to prevent the needle body rotation, so as not to feed. Hole misalignment.Injector work, from the high-pressure diesel fuel injection pump, the tubing connector into the injector body feed on 14, 15 and oil into the needle valve body in the middle of the ring cavity 12 effects on needle valve pressure cone, the needle valve to form an upward axial thrust, once the thrust is greater than the injector pressure regulating spring 16 preloading, needle valve up immediately, open the nozzle hole 10, high pressure Diesel sprays into the combustion chamber. When the fuel injection pump fuel cut-off high-pressure oil pressure drops rapidly within the tao, needle valve under the effect of pressure regulating spring return in time, will orifice closed and stop the injection.Annular oil into the needle valve body cavity 12 small diesel, diesel injector nozzle is the match between the surface of the gap flow to the regulating spring, into the return pipe, flow back to filter, diesel injector nozzle is used for lubrication.Needle valve opening pressure (injection pressure) depends on the size of the pressure regulating spring pre-tightening force. Different engines have different injection pressure requirements, can be adjusted through regulating screw 17, when screwing in pressure, turn the pressure decreases.

our warehouse

Pack and ship

• Aerial Boom Lift
• China Dump Truck
• Cold Recycler
• Cone Crusher Liner
• Container Side Lifter
• Dadi Bulldozer Part
• Forklift Sweeper Attachment
• Hbxg Bulldozer Parts
• Howo Engine Parts
• Hyundai Excavator Hydraulic Pump
• Komatsu Bulldozer Parts
• Komatsu Excavator Gear Shaft
• Komatsu Pc300-7 Excavator Hydraulic Pump
• Liugong Bulldozer Parts
• Sany Concrete Pump Spare Parts
• Sany Excavator Spare Parts
• Shacman Engine Parts
• Shantui Bulldozer Clutch Shaft
• Shantui Bulldozer Connecting Shaft Pin
• Shantui Bulldozer Control Flexible Shaft
• Shantui Bulldozer Flexible Shaft
• Shantui Bulldozer Lifting Cylinder Repair Kit
• Shantui Bulldozer Parts
• Shantui Bulldozer Reel Shaft
• Shantui Bulldozer Reverse Gear Shaft
• Shantui Bulldozer Spare Parts
• Shantui Bulldozer Winch Drive Shaft
• Shantui Dozer Bolt
• Shantui Dozer Front Idler
• Shantui Dozer Tilt Cylinder Repair Kit
• Shantui Sd16 Bevel Gear
• Shantui Sd16 Brake Lining
• Shantui Sd16 Door Assembly
• Shantui Sd16 O-Ring
• Shantui Sd16 Track Roller
• Shantui Sd22 Bearing Sleeve
• Shantui Sd22 Friction Disc
• Shantui Sd32 Track Roller
• Sinotruk Engine Parts
• Tow Truck
• Xcmg Bulldozer Parts
• Xcmg Bulldozer Spare Parts
• Xcmg Hydraulic Lock
• Xcmg Transmission
• Yuchai Engine Parts