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Excavator Fuel Injection Pump (101062-8520) for Caterpillar E312B – Q&A Style Specification (English)
Q1: What is the product identification and applicable scope of the 101062-8520 fuel injection pump for E312B?
A1: The 101062-8520 fuel injection pump is an OEM-compatible high-pressure plunger-type fuel system core component, exclusively engineered for Caterpillar E312B 12-ton mid-size excavators, paired with the Cat 3046T 4-cylinder diesel engine (rated power: 70.1kW @ 1950rpm).
Core Product Attributes: It is a mechanical-electronic integrated injection pump, featuring precise fuel metering and pressure regulation functions, and is fully interchangeable with the original E312B fuel system without additional modifications.
Applicable Scenarios:
Targets E312B’s typical working conditions: municipal engineering, small-scale earthmoving, residential construction foundation digging, and orchard land preparation (light-to-medium load continuous operation);
Serves as a direct replacement part for faulty original pumps (e.g., low fuel pressure, uneven fuel injection, pump plunger wear) and routine maintenance to restore engine power output and fuel efficiency.
Q2: What is the working principle and core functions of the 101062-8520 fuel injection pump?
A2: As the “fuel pressure core” of the E312B’s 3046T engine, the 101062-8520 injection pump converts low-pressure fuel from the tank into high-pressure fuel for cylinder injection, realizing efficient combustion control via mechanical-electronic coordination:
Working Principle
Low-Pressure Fuel Intake: The fuel transfer pump draws diesel from the tank and delivers it to the injection pump’s fuel chamber at a pressure of 0.3–0.5MPa;
High-Pressure Fuel Generation: Driven by the engine camshaft, the internal plunger reciprocates to compress fuel, generating a high pressure of up to 120MPa;
Precision Fuel Injection: The pump’s fuel metering valve adjusts the fuel injection quantity according to signals from the E312B’s ECM, and delivers high-pressure fuel to each cylinder’s injector at the optimal timing for complete combustion.
Core Functions
- Product Details
