fuel pump-regulator
NR-30KU-4
Price on request
fuel pump-regulator
Partner Stock
Description
NR-30KU-4 in D-30KU and D-30KP engine fuel control systems
The NR-30KU-4 is a high-pressure plunger fuel pump-regulator used in the fuel-control system of D-30KU, D-30KP and related D-30KU-154 turbofan engines. It is installed on engines used on aircraft such as Il-62M and Il-76, depending on engine configuration. The unit combines fuel pumping, metering and automatic regulation functions in one hydromechanical assembly. In the engine system, the NR-30KU-4 supplies fuel to the main combustion chamber and controls fuel flow according to engine operating mode.
Fuel supply function of the NR-30KU-4 pump-regulator
The main task of the NR-30KU-4 is to deliver aviation kerosene under pressure to the engine fuel nozzles. The pumping section generates high-pressure fuel flow, while the regulating section meters the required amount of fuel. Fuel delivery changes according to throttle position, compressor pressure, rotor speed, flight altitude, airspeed and engine control laws. Correct operation of the NR-30KU-4 is critical during start, acceleration, cruise, takeoff and transient regimes, where the engine must receive fuel accurately without overtemperature, surge or rotor overspeed.
Multiplunger pumping unit in the NR-30KU-4
The NR-30KU-4 uses a rotary multiplunger pumping unit with a variable swash plate angle. This design allows the pump-regulator to create high fuel pressure and regulate delivery according to system demand. The working medium is aviation kerosene such as TS-1, T-1 or RT. Because the unit contains precision plunger and spool elements, fuel cleanliness and correct inlet pressure are essential. Contamination, air in the fuel line, poor filtration or unstable feed from the booster pump can affect metering accuracy and engine operation.
Automatic fuel metering laws of NR-30KU-4
The regulating section of the NR-30KU-4 operates through different fuel-metering laws depending on engine mode. During start and low-idle operation below approximately 84% high-pressure rotor speed, fuel delivery is controlled by the built-in starting fuel automatic unit according to compressor discharge pressure with correction for ambient pressure. At higher operating speeds, around 84–86% high-pressure rotor speed and above, fuel control transfers to the centrifugal high-pressure rotor speed regulator. This allows the engine to move from start scheduling to normal automatic speed regulation.
NR-30KU-4 compressor guide vane and bleed valve control
The NR-30KU-4 also supports engine compressor control functions. It supplies fuel pressure to the CNA-30K guide vane actuator, which turns compressor guide vanes according to the engine operating schedule. The pump-regulator also participates in hydraulic control of compressor bleed valves, helping protect the engine from surge during start and acceleration. These functions connect fuel metering with compressor airflow management, making the NR-30KU-4 a central unit of the D-30KU / D-30KP hydromechanical control system.
Associated fuel and control units of NR-30KU-4
On the low-pressure fuel side, the NR-30KU-4 works with the DTSN-44S-PZT centrifugal booster pump, which supplies fuel from the aircraft tanks at stable inlet pressure. It is also associated with the TsVS-30K centrifugal air separator with filter-signalizer, which removes air and filters fuel before it enters the high-pressure pumping section. On the electronic limiting side, the unit can interact with the IMT-3 temperature actuator and RT-12 type temperature regulator. If turbine gas temperature exceeds the limit, the actuator shifts the metering element inside the pump-regulator to reduce fuel delivery.
Mechanical drive and installation of NR-30KU-4
The NR-30KU-4 is mounted on the aircraft accessory gearbox located on the lower accessory reduction gearbox of the D-30KU / D-30KP / D-30KU-154 engine separation case. The unit is driven mechanically from the high-pressure rotor through a splined torsion shaft. It is connected to the cockpit throttle levers through mechanical linkage, including cables, bellcranks and rigid rods depending on aircraft installation. During installation, the drive interface, mounting flange, seals, control linkage and fuel connections must be checked carefully.
Supply, repair and inspection of NR-30KU-4
The NR-30KU-4 is an aviation fuel-control unit and should be supplied with documentation whenever possible. Available conditions may include new production, storage stock, repaired, overhauled or bench-tested serviceable units. Before installation, the unit should be inspected for housing condition, drive interface, fittings, seals, adjustment points, corrosion, leakage traces, preservation state and documentation. Bench testing is essential for this type of unit and should confirm fuel delivery, pressure, starting schedule, acceleration behavior, guide vane control, limiting functions and interaction with associated correction equipment.
Product Type: Aircraft high-pressure fuel pump-regulator
Designation: NR-30KU-4
Alternative Designation: НР-30КУ-4
Function: Fuel pumping, metering and automatic regulation of D-30KU / D-30KP engine operating modes
Application / Where Used: Fuel-control systems of D-30KU, D-30KP and D-30KU-154 turbofan engines
System / Installation Area: Engine-mounted fuel supply and hydromechanical control system
Compatible Engines: D-30KU, D-30KP, D-30KU-154 depending on modification
Compatible Aircraft / Equipment: Il-62M, Il-76 and related aircraft platforms depending on engine installation
Operating Role: Main high-pressure fuel pump-regulator for combustion chamber fuel supply and engine control functions
Pump Type: Multiplunger rotary high-pressure pump with variable swash plate angle
Working Medium: Aviation kerosene TS-1, T-1, RT
Drive Type: Mechanical drive from engine accessory gearbox through splined torsion shaft
Installation Location: Lower accessory reduction gearbox of D-30KU / D-30KP engine separation case
Fuel Inlet Supply Unit: DTSN-44S-PZT centrifugal booster pump
Fuel Cleaning / Air Separation Unit: TsVS-30K centrifugal air separator with filter-signalizer
Associated Guide Vane Actuator: CNA-30K guide vane cylinder
Associated Bleed System: Compressor bleed valves controlled hydraulically depending on engine mode
Electronic Limiting Interface: IMT-3 temperature actuator and RT-12 type electronic temperature regulator depending on configuration
Associated Speed Regulator: TsR-1-30K centrifugal speed regulator depending on system configuration
Throttle Control: Mechanical linkage from cockpit engine control levers
Fuel Pressure After Pump: Up to approximately 100–120 kgf/cm² depending on engine mode and flight conditions
Low-Idle / Start Control Range: Below approx. 84% high-pressure rotor speed
Normal Automatic Regulation Range: From approx. 84–86% high-pressure rotor speed and above
Typical Control Functions: Fuel metering, start fuel scheduling, acceleration control, rotor speed regulation, compressor guide vane actuation, bleed valve control, turbine gas temperature limiting and maximum speed limitation
Dry Weight: Approximately 28–32 kg depending on protective screen, fittings and modification
Technical Documentation: Product passport, repair documents, bench-test documents and D-30KU / D-30KP fuel-control documentation as applicable
Payment & delivery
All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.
In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.
Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.
Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.
Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.
Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.
- Description
- Payment & delivery
NR-30KU-4 in D-30KU and D-30KP engine fuel control systems
The NR-30KU-4 is a high-pressure plunger fuel pump-regulator used in the fuel-control system of D-30KU, D-30KP and related D-30KU-154 turbofan engines. It is installed on engines used on aircraft such as Il-62M and Il-76, depending on engine configuration. The unit combines fuel pumping, metering and automatic regulation functions in one hydromechanical assembly. In the engine system, the NR-30KU-4 supplies fuel to the main combustion chamber and controls fuel flow according to engine operating mode.
Fuel supply function of the NR-30KU-4 pump-regulator
The main task of the NR-30KU-4 is to deliver aviation kerosene under pressure to the engine fuel nozzles. The pumping section generates high-pressure fuel flow, while the regulating section meters the required amount of fuel. Fuel delivery changes according to throttle position, compressor pressure, rotor speed, flight altitude, airspeed and engine control laws. Correct operation of the NR-30KU-4 is critical during start, acceleration, cruise, takeoff and transient regimes, where the engine must receive fuel accurately without overtemperature, surge or rotor overspeed.
Multiplunger pumping unit in the NR-30KU-4
The NR-30KU-4 uses a rotary multiplunger pumping unit with a variable swash plate angle. This design allows the pump-regulator to create high fuel pressure and regulate delivery according to system demand. The working medium is aviation kerosene such as TS-1, T-1 or RT. Because the unit contains precision plunger and spool elements, fuel cleanliness and correct inlet pressure are essential. Contamination, air in the fuel line, poor filtration or unstable feed from the booster pump can affect metering accuracy and engine operation.
Automatic fuel metering laws of NR-30KU-4
The regulating section of the NR-30KU-4 operates through different fuel-metering laws depending on engine mode. During start and low-idle operation below approximately 84% high-pressure rotor speed, fuel delivery is controlled by the built-in starting fuel automatic unit according to compressor discharge pressure with correction for ambient pressure. At higher operating speeds, around 84–86% high-pressure rotor speed and above, fuel control transfers to the centrifugal high-pressure rotor speed regulator. This allows the engine to move from start scheduling to normal automatic speed regulation.
NR-30KU-4 compressor guide vane and bleed valve control
The NR-30KU-4 also supports engine compressor control functions. It supplies fuel pressure to the CNA-30K guide vane actuator, which turns compressor guide vanes according to the engine operating schedule. The pump-regulator also participates in hydraulic control of compressor bleed valves, helping protect the engine from surge during start and acceleration. These functions connect fuel metering with compressor airflow management, making the NR-30KU-4 a central unit of the D-30KU / D-30KP hydromechanical control system.
Associated fuel and control units of NR-30KU-4
On the low-pressure fuel side, the NR-30KU-4 works with the DTSN-44S-PZT centrifugal booster pump, which supplies fuel from the aircraft tanks at stable inlet pressure. It is also associated with the TsVS-30K centrifugal air separator with filter-signalizer, which removes air and filters fuel before it enters the high-pressure pumping section. On the electronic limiting side, the unit can interact with the IMT-3 temperature actuator and RT-12 type temperature regulator. If turbine gas temperature exceeds the limit, the actuator shifts the metering element inside the pump-regulator to reduce fuel delivery.
Mechanical drive and installation of NR-30KU-4
The NR-30KU-4 is mounted on the aircraft accessory gearbox located on the lower accessory reduction gearbox of the D-30KU / D-30KP / D-30KU-154 engine separation case. The unit is driven mechanically from the high-pressure rotor through a splined torsion shaft. It is connected to the cockpit throttle levers through mechanical linkage, including cables, bellcranks and rigid rods depending on aircraft installation. During installation, the drive interface, mounting flange, seals, control linkage and fuel connections must be checked carefully.
Supply, repair and inspection of NR-30KU-4
The NR-30KU-4 is an aviation fuel-control unit and should be supplied with documentation whenever possible. Available conditions may include new production, storage stock, repaired, overhauled or bench-tested serviceable units. Before installation, the unit should be inspected for housing condition, drive interface, fittings, seals, adjustment points, corrosion, leakage traces, preservation state and documentation. Bench testing is essential for this type of unit and should confirm fuel delivery, pressure, starting schedule, acceleration behavior, guide vane control, limiting functions and interaction with associated correction equipment.
Product Type: Aircraft high-pressure fuel pump-regulator
Designation: NR-30KU-4
Alternative Designation: НР-30КУ-4
Function: Fuel pumping, metering and automatic regulation of D-30KU / D-30KP engine operating modes
Application / Where Used: Fuel-control systems of D-30KU, D-30KP and D-30KU-154 turbofan engines
System / Installation Area: Engine-mounted fuel supply and hydromechanical control system
Compatible Engines: D-30KU, D-30KP, D-30KU-154 depending on modification
Compatible Aircraft / Equipment: Il-62M, Il-76 and related aircraft platforms depending on engine installation
Operating Role: Main high-pressure fuel pump-regulator for combustion chamber fuel supply and engine control functions
Pump Type: Multiplunger rotary high-pressure pump with variable swash plate angle
Working Medium: Aviation kerosene TS-1, T-1, RT
Drive Type: Mechanical drive from engine accessory gearbox through splined torsion shaft
Installation Location: Lower accessory reduction gearbox of D-30KU / D-30KP engine separation case
Fuel Inlet Supply Unit: DTSN-44S-PZT centrifugal booster pump
Fuel Cleaning / Air Separation Unit: TsVS-30K centrifugal air separator with filter-signalizer
Associated Guide Vane Actuator: CNA-30K guide vane cylinder
Associated Bleed System: Compressor bleed valves controlled hydraulically depending on engine mode
Electronic Limiting Interface: IMT-3 temperature actuator and RT-12 type electronic temperature regulator depending on configuration
Associated Speed Regulator: TsR-1-30K centrifugal speed regulator depending on system configuration
Throttle Control: Mechanical linkage from cockpit engine control levers
Fuel Pressure After Pump: Up to approximately 100–120 kgf/cm² depending on engine mode and flight conditions
Low-Idle / Start Control Range: Below approx. 84% high-pressure rotor speed
Normal Automatic Regulation Range: From approx. 84–86% high-pressure rotor speed and above
Typical Control Functions: Fuel metering, start fuel scheduling, acceleration control, rotor speed regulation, compressor guide vane actuation, bleed valve control, turbine gas temperature limiting and maximum speed limitation
Dry Weight: Approximately 28–32 kg depending on protective screen, fittings and modification
Technical Documentation: Product passport, repair documents, bench-test documents and D-30KU / D-30KP fuel-control documentation as applicable
All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.
In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.
Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.
Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.
Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.
Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.