Description
Product Overview
The high-pressure rail pressure sensor is installed in the common rail fuel pipeline. The internal sensing element continuously monitors the high fuel pressure and converts the pressure value into an electrical control signal to supply to the ECU, precisely controlling the oil pump supply and fuel injection volume. After long-term exposure to high-temperature and high-pressure fuel erosion, as well as water vapor and dust erosion, the internal chip ages and the seal fails, resulting in pressure signal deviation, rail pressure失控， vehicle power limitation， and excessive black smoke in exhaust. This product is a complete integrated sensor assembly. It undergoes a complete set of tests for high-pressure resistance， signal linearity accuracy， and waterproof sealing at the factory. The entire machine can be replaced without additional calibration. It is suitable for light trucks， small construction machinery， and agricultural common rail diesel equipment fuel supply system maintenance.
Unique Core Features of the Single Product
Thickened hexagonal stainless steel pressure-bearing shell， resistant to high pressure and corrosion without deformation
The main body adopts an integrated stamping stainless steel hexagonal shell， with sufficient pressure-bearing wall thickness， capable of withstanding continuous high-pressure impact from the common rail. The surface is treated with passivation for rust prevention， resisting corrosion from diesel， engine oil， and water vapor， avoiding shell leakage and cracking for pressure relief.
Precision brass high-pressure threaded joints， easy to seal and lock without oil leakage
The bottom is an integrated brass external threaded oil nozzle with standard unified thread pitch. The end face is smooth and flat， and when paired with a sealing gasket and tightened， it fits tightly， preventing fuel leakage in high-pressure conditions. The threads are not prone to rust， slipping， or getting stuck.
Vertical black waterproof electronic control plug， with barcode identification， stable signal and anti-interference
The upper upright plastic-sealed electronic control connector contains multiple layers of waterproof and dust-proof rubber rings to isolate oil， rain， and dust. The plug is labeled with a barcode， and the shell is laser-engraved with the part number. The model identification is clear. In jolting conditions， the pins are not prone to oxidation and false connection， and the signal transmission has no delay or drift.
Highly sensitive built-in sensing chip， linear oil pressure detection
The internal is equipped with a high-precision pressure sensing element， covering the full load conditions of the engine. The pressure feedback error is small， and the ECU can precisely adjust the fuel injection volume， improving combustion efficiency and reducing fuel consumption and black smoke emissions.
Fully sealed epoxy resin packaging， resistant to high temperature and aging
The internal chip and circuit of the sensor are fully sealed with epoxy resin， preventing fuel and high temperatures from invading and damaging the electronic components. It is not prone to signal loss or sensor error faults in alternating high and low temperature environments and can be used for long-term use without issues. Applicable scenarios
It is suitable for light-duty diesel trucks with electronic common rail systems, small wheeled excavators, agricultural tractors, mobile diesel generators, and is applicable for short-distance urban transportation, field farming, light-load construction sites, and maintenance of small-sized electric common rail diesel power high-pressure oil circuits in high temperature, high humidity and dusty environments.
Product Basic Parameters
Product Name: Common Rail High Pressure Pressure Sensor
Part Number: 55PP29-01
Main Material: Stainless steel pressure-bearing shell, brass high-pressure threaded connector, waterproof engineering plastic electronic control plug, high-precision pressure sensing chip
Structural Feature: Hexagonal metal pressure-bearing housing, brass high-pressure threaded oil nozzle, vertical barcode waterproof electronic control plug, fully sealed built-in sensing chip
Application Conditions: Continuous light / medium-heavy load, cabin alternating high temperature and high humidity, outdoor high dust small-sized electric common rail diesel engine common rail oil circuit
Product Status: New and complete pressure sensor assembly, factory completed with high-pressure withstand, signal accuracy, and waterproof sealingity comprehensive testing
Packaging: Independent shock-proof packaging, threaded connectors and electronic control plugs are equipped with protective covers to avoid transportation scratches on the threads and pins, supports single-piece and multi-piece batch purchases, and is compatible with cross-border small-sized logistics.
