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Genuine Original Product Throttle Body Assembly 0280750129 for Yutong Jinlong Bus Yuchai

The BOSCH 0 280 750 129 is a high-precision electronic throttle body assembly developed by Robert Bosch GmbH, designed specifically for advanced CNG/LNG-powered heavy-duty engines. As of 2026, with increasingly stringent global emissions regulations (e.g., Euro VIe, China VIb), this component plays a critical role in optimizing air-fuel mixture control, reducing NOx emissions, and enhancing engine responsiveness in premium commercial vehicles. Utilizing drive-by-wire technology, it replaces traditional mechanical linkages with an intelligent electronic interface between the accelerator pedal and intake system. It is widely used on MAN D20/D28 and select Iveco Cursor series gas engines, and integrated into high-end natural gas buses and trucks from manufacturers such as Yutong, SINOTRUK, MAN, and Neoplan. Featuring dual-redundant position sensors and fast-response DC motor actuation, the 0 280 750 129 ensures reliable performance, safety redundancy, and compliance with modern engine management standards.
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  • 280750129

  • Yutong Bus Parts

Attribute Description
Product Name Electronic Throttle Body Assembly
Part Number 0 280 750 129 / BOSCH 0280750129
Manufacturer BOSCH (Robert Bosch GmbH)
Application Type Natural Gas (CNG/LNG) Heavy-Duty Engines
Primary Fitment Engines MAN D20, D28 Series; Iveco Cursor Gas Engines
Vehicle Compatibility MAN Lion's City, Neoplan Coaches, Yutong, SINOTRUK – High-End NG Models
Control System Drive-by-Wire (Electronically Controlled via ECU)
Actuation Mechanism Integrated DC Motor with Precision Butterfly Valve
Sensor Configuration Dual Redundant Position Sensors (for fault tolerance)
Voltage Rating 24V DC
Connector Type 6-pin or 8-pin Industrial Sealed Plug (OEM-specific version dependent)
Compliance Standards ISO 15151, ISO 7637-2 (EMC & Electrical Durability), OBD-II/PED Regulations
节气门-2


节气门-3


Parameter Value / Description
Operating Voltage 24V DC (nominal), compatible with heavy-duty vehicle electrical systems
Control Principle ECU-driven PWM signal to internal motor for precise valve angle control
Valve Diameter ~80 mm – 90 mm (depending on intake manifold design)
Response Time < 100 ms (full open/close cycle)
Material – Housing Die-Cast Aluminum Alloy (high strength, heat dissipation)
Material – Sensor Cover High-Temperature Engineering Plastic
Sensor Type Dual Potentiometer (Redundant Signal Output: e.g., 0.5V–4.5V range)
Signal Output Two independent analog voltage signals for ECU cross-checking
Protection Class IP67 (dust-tight and protected against temporary immersion)
Operating Temperature Range -40°C to +125°C (ambient); withstands under-hood thermal cycling
Expected Service Life > 10 million cycles or 8 years under normal operation
Flow Characteristics Optimized for laminar airflow with minimal turbulence at partial opening


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