【Product Basic Overview】

The engine air intake system rubber hose is specially developed for the air intake and ventilation working conditions of construction machinery engines, serving as a key ventilation pipeline connecting air filters, turbochargers and engine throttle valves. It solves common problems of ordinary intake hoses such as poor high temperature resistance, easy cracking and aging in ozone environment, collapse under negative pressure suction, air leakage due to delamination from engine vibration, insufficient air intake leading to power reduction and increased fuel consumption. Adopting high-quality double-layer EPDM rubber and industrial yarn knitted reinforcement structure, formed by high-temperature integrated vulcanization process, the layers are tightly bonded without delamination, bulging or degumming. Balancing flexibility and structural support strength, it adapts to complex and harsh working conditions such as high temperature and closed engine compartment, outdoor sun and ozone erosion, and continuous equipment vibration. It stably conveys air medium without air leakage for a long time, ensuring sufficient and uniform engine air intake, stabilizing power output and reducing fuel consumption. It is an indispensable wear-resistant and weather-resistant special accessory for engineering vehicle air intake systems.

【Product Structure & Core Material Description】

1. Inner Air Intake Rubber Layer: Made of high-elastic EPDM rubber, specially designed for air intake medium. The inner wall is smooth and dense with low air intake resistance and smooth air flow conveying, no dust accumulation or aging residue, avoiding engine cylinder wear caused by impurities. With good elasticity, no deformation or hardening after long-term ventilation, ensuring long-term clean and smooth air intake system. 2. Middle Knitted Reinforcement Layer: High-density and high-strength industrial yarn knitted surrounding reinforcement structure, effectively improving the overall structural strength, tensile resistance and negative pressure deformation resistance of the hose. It withstands long-term engine vibration, torsion and tension, no collapse or deformation under high temperature and negative pressure at 110℃, maintaining stable pipeline shape. 3. Outer Weather-Resistant Protective Layer: Made of special weather-resistant EPDM rubber, anti-ozone, anti-ultraviolet, high temperature resistant and weather aging resistant, meeting GB/T7762 aging test requirements. No cracking, pulverization or hardening after long-term outdoor sun exposure and high-temperature use, fully protecting the internal reinforcement structure and greatly extending the overall service life of the hose.

【Core Standard Technical Parameters】

Applicable Working Medium: Engine normal temperature intake air; Rubber Shore Hardness: 70±5HA, moderate elasticity and fast deformation recovery; Ozone Aging Standard: Compliant with GB/T7762, ozone partial pressure 50±5MPa, temperature 40±2℃, no cracking after 72-hour test; High Temperature Burst Pressure: Not less than 0.1MPa at 110℃, pressure resistant and anti-burst; Negative Pressure Resistance: Up to -0.01MPa at 110℃, no pipe collapse under negative pressure suction; Application Working Condition: Engineering vehicle engine conventional air intake negative pressure ventilation and air filter connecting pipeline ventilation; Conventional Inner Diameter Specifications: DN20, DN25, DN32, DN40, DN50, DN63 and other common engineering vehicle air intake calibers; Customization Service: Custom processing of non-standard caliber, arbitrary length, special-shaped bent pipes and reducing air intake hoses as required.

【Core SEO Performance Advantages】

1. National standard ozone aging resistance: Tested in accordance with GB/T7762 standard, no cracking after 72-hour ozone test, outdoor sun and weather resistant, no cracking or pulverization for long-term use; 2. Stable performance at high temperature: Pressure and negative pressure performance meet standards at 110℃, no softening, deformation or collapse in high-temperature engine compartment; 3. Negative pressure collapse resistance and sufficient air intake: Reinforced knitted structure, no pipe collapse under negative pressure suction, stable air intake flow, no engine power attenuation or increased fuel consumption; 4. Flexible vibration resistance and easy installation: Good hose flexibility and bending performance, suitable for wiring in narrow engine compartments, anti-vibration no falling off and tight interface sealing without air leakage; 5. Smooth inner wall and high air intake efficiency: Smooth inner rubber without resistance, smooth air intake and no dust accumulation, protecting engine internal parts and reducing equipment maintenance frequency; 6. Double-layer EPDM durable quality: High-quality rubber with the same inner and outer material, integrated vulcanization no delamination, wear and weather resistant with longer service life than ordinary intake hoses; 7. Complete specifications and customizable: Sufficient conventional spot goods for quick delivery, fast customization for non-standard special-shaped pipes, adapting to full series of domestic and imported engineering machinery equipment.

【Main Application Scope】

Widely used in special pipelines for engine air intake systems of various engineering machinery equipment, including excavators, loaders, bulldozers, road rollers, graders, forklifts, cranes and other heavy construction machinery; mainly used for air filter intake connecting pipes, engine turbo intake hoses, throttle intake conveying pipes, air intake system negative pressure ventilation auxiliary pipes and other core working conditions, suitable for complex outdoor operating environments such as mining, infrastructure construction, farmland water conservancy and construction site operation, specially used for engineering vehicle engine air conveying, intake voltage stabilization and negative pressure suction matching.

【Original Manufacturer Supply Advantages】

We are a professional direct manufacturer of engine air intake system rubber hoses, factory direct sales without middlemen markup with favorable ex-factory price and high cost performance. Sufficient spot inventory for conventional engineering vehicle specifications with fast delivery after ordering, without delaying construction period. All air intake hoses are produced in strict accordance with GB/T7762 national standard process. Each batch of products has passed ozone aging test, high temperature burst pressure test, negative pressure deformation test and sealing leakage sampling inspection with strict quality control and stable performance. We undertake bulk purchase orders for engineering machinery parts dealers, maintenance factories and equipment manufacturers for a long time, support customized development and processing of special specifications and special-shaped air intake hoses, perfect after-sales service and long-term stable supply, one-stop meeting the procurement and supporting needs of various engineering vehicle engine air intake pipelines.