Exhaust Up Pipe

I. Product Commonalities and Core Values

II. Product Principles of Exhaust Up Pipe

1. Exhaust Gas Collection and Diversion Principle

   Based on fluid mechanics principles, the Exhaust Up Pipe integrates pulsed exhaust gas from multiple engine cylinders into a single or a small number of outlets through a multi-manifold confluence structure. Its pipeline curvature and gradual diameter change design reduce turbulence loss during exhaust gas confluence. JIATIAN uses hydraulic internal forming machines with a maximum processing length of 1.5 meters and a diameter range of ￠10 to ￠80 to accurately realize the flow channel optimization forming of the pipeline.
2. Pulse Coordination Principle

   There is a timing difference in exhaust from different cylinders. The Exhaust Up Pipe offsets the mutual interference of exhaust pulses through unequal-length pipeline design, avoiding a decrease in engine intake efficiency caused by exhaust gas backflow. JIATIAN's 800T hydraulic water expansion machine can achieve one-time forming of special-shaped pipeline structures, ensuring the precise implementation of the pulse coordination design.
3. Thermal Management and Emission Adaptation Principle

   The Exhaust Up Pipe must withstand high temperatures of up to 1000°C and provide the necessary operating temperature for close-coupled catalytic converters. It is made of high-temperature-resistant stainless steel. JIATIAN's large-scale brazing furnace assembly lines can realize overall high-temperature brazing treatment of pipe fittings, enhancing the product's heat resistance and sealing performance. At the same time, the supporting comprehensive laboratory can conduct full-process testing of the product's thermal stability.

III. Typical Application Cases

1. Passenger Vehicle Fuel Power System

   Suitable for 1.5T-2.0T household passenger vehicles, the Exhaust Up Pipe produced by JIATIAN can effectively reduce the exhaust backpressure of small-displacement turbocharged engines and improve engine torque at medium and low speeds. It has been matched with compact SUV models of many domestic independent brand passenger vehicle manufacturers, and its laser-welded pipeline interfaces can achieve sealing reliability for more than 5 years.
   
   
2. Commercial Vehicle Diesel Power System

   For large-displacement engines of heavy-duty diesel trucks, the large-diameter Exhaust Up Pipe processed by JIATIAN's hydraulic internal forming machines can meet the diversion demand of high exhaust gas flow and withstand higher exhaust temperatures of diesel engines. It has been applied to heavy-duty tractor series of domestic commercial vehicle manufacturers.
   
   
3. Hybrid Vehicle Exhaust System

   Adapting to the engine start-stop working conditions of plug-in hybrid vehicles, the Exhaust Up Pipe needs to have rapid warm-up capability to ensure the efficient operation of the catalytic converter. JIATIAN's water expansion forming technology can realize uniform thin-wall forming of pipelines, improving heat transfer efficiency, and has been matched with special exhaust systems for hybrid vehicles.

IV. Detailed Comparison of Exhaust Up Pipes with Different Processes/Materials

V. Maintenance Guidelines for Exhaust Up Pipe

1. Daily Inspection
   • Regularly inspect the pipeline interface welds of the Exhaust Up Pipe for rust or abnormal noise caused by exhaust gas leakage. Refer to the leakage detection standards of JIATIAN's comprehensive laboratory to check for sealing hidden dangers through pressure testing;
   • Check whether the heat insulation layer on the pipeline surface is intact. If damaged, replace it in time to avoid high-temperature radiation affecting surrounding components.
2. Regular Maintenance
   • Clean the carbon deposits on the inner wall of the pipeline every 20,000 kilometers. Excessive carbon deposits will increase exhaust backpressure. Use special high-temperature carbon remover for cleaning to avoid damaging the pipeline coating;
   • Recheck the torque of the welding interfaces every 50,000 kilometers and calibrate them according to the installation torque parameters provided by JIATIAN (different models correspond to different torque values) to prevent interface loosening.
3. Fault Handling
   • If there is exhaust abnormal noise, first check whether the Exhaust Up Pipe pipeline is cracked. Cracked cast iron pipe fittings need to be replaced as a whole, while JIATIAN's stainless steel pipe fittings can be repaired by laser welding;
   • If the exhaust backpressure increases abnormally, check whether the pipeline is deformed or blocked. JIATIAN's R&D center can be relied on for flow channel testing and repair plan formulation.

VI. Frequently Asked Questions (FAQ)

1. Q: How to confirm the compatibility of Exhaust Up Pipe?

   A: It is necessary to confirm based on the number of engine cylinders, exhaust manifold interface specifications, and vehicle chassis layout. JIATIAN can provide customized compatibility solutions based on vehicle models, and its 10 CNC pipe bending machines can achieve precise customization of pipelines for different vehicle models.
   
   
2. Q: What is the warranty period of Exhaust Up Pipe produced by JIATIAN?

   A: Depending on the application scenario of the product, the warranty period covers 1-3 years. The warranty standards for its welding interfaces and forming structures are higher than the industry's conventional level. For details, refer to the vehicle warranty manual.
   
   
3. Q: Will the material of Exhaust Up Pipe affect vehicle emissions?
   A: It will have a direct impact. The stainless steel material adopted by JIATIAN can ensure the long-term corrosion resistance of the pipeline, avoid exhaust gas leakage and emission exceeding standards caused by pipeline corrosion, and its precise flow channel design can improve the working efficiency of the catalytic converter.