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6P1168(6P1168-120-1100)/4944742 FUEL INJECTION PUMP

6P1168(6P1168-120-1100)/4944742 FUEL INJECTION PUMP

1）Product Name: fuel injection pump
2）Model No.:6P1168(6P1168-120-1100)/4944742
3）Delivery time:3-5 days
4）Payment Methods: T/T, Western Union, Paypal, Alibaba
5）Origin: made in China

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Product Introduction

Base Model: 6P1168

6P: Typically denotes a 6-cylinder inline pump (P-series is a common designation for diesel engine high-pressure fuel pumps).

1168: Design code for pump bodies used in domestic diesel engines (e.g., Yuchai/Weichai), indicating specific structural dimensions and fuel delivery ranges.

Suffix Codes: -120-1100

120: Likely indicates plunger diameter (e.g., 12.0 mm) or compatible engine power range (120 HP class).

1100: Commonly refers to the rated speed calibration (fuel delivery volume at 1100 r/min) or design version number.

Key Parameters

Parameter	Value/Description
Cylinder Compatibility	6-cylinder diesel engines
Plunger Diameter	≈10.5–12.0 mm (must be verified by measurement)
Injection Pressure	60–120 MPa (peak)
Governor Type	Mechanical Centrifugal (RSV/RQV series)
Rotation Direction	Clockwise (viewed from drive end)
Compatible Power Range	180–300 HP

Design Features

Structural Composition

Pump Body: Cast iron, integrating camshaft, plunger barrel, and delivery valve assembly.

Plunger-Barrel Assembly: Precision-matched pair controlling fuel delivery volume and timing.

Governor: Built-in mechanical centrifugal governor stabilizing idle speed and limiting overspeed.

Advancer: Hydraulic automatic advance-angle device (optional in some models).

Operating Principle

Camshaft drives plunger upward to compress fuel → High-pressure fuel forced through delivery valve into fuel lines → Atomized injection via injectors.

Fuel delivery regulated via control rack, dynamically managed by the governor based on engine speed.