Skip to main content

Important measures to improve the performance of LPG public bus engines

 

The current layout of the radiator, fan and partition in the air intake compartment in the engine compartment is unreasonable. For example, there is a vortex in front of the radiator. L1 is not fully utilized, and the actual flow to the engine working area is very small, and the flow velocity is very low, resulting in poor convective heat transfer efficiency and poor heat dissipation in the engine compartment. In the improvement plan of the engine compartment layout, consider changing the orientation of components such as radiators and fans, changing the fan to face the engine body instead of the rear door, and removing the partition of the air inlet compartment in Zone A, which can effectively The high-speed air flow from the fan is used to improve the efficiency of convection heat transfer in the cabin and improve the heat dissipation performance of the cabin.

Using CFD and engineering heat transfer numerical analysis methods, the air flow vector diagram and the temperature distribution cloud map in the flow field in the engine compartment of a certain type of LPG gas bus are obtained, and the main high-temperature components in the engine compartment are analyzed based on the radiator. , Intercooler, engine block, turbocharger, etc., their heat is transferred to the outside of the engine compartment by the convection of air. The layout of various components in the engine compartment, especially the positions of various partitions and fans in the compartment, is one of the key factors that cause the heat dissipation characteristics of the engine compartment. Therefore, the engine compartment design based on automobile air heat transfer dynamics is one of the important measures to improve the performance of the LPG public bus engine.

For automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

Link to this article:Important measures to improve the performance of LPG public bus engines

Reprint Statement: If there are no special instructions, all articles on this site are original. Please indicate the source for reprinting.:Cnc Machining,Thank

Comments

Popular posts from this blog

Machining and welding process notes for TC4 titanium alloy parts

Common welding methods for titanium and titanium alloys are as follows: Argon arc welding, submerged arc welding, vacuum electron beam welding, etc. Tungsten argon arc welding is used for thicknesses of 3 mm or less, and argon arc welding is done for 3 mm or more. The purity of argon is over 99.99%, and the content of air and water vapor in argon is strictly controlled. Currently, for TC4 titanium alloys, argon arc welding, plasma arc welding are often used for welding, but both methods need to be filled with welding material. Limitations on shield gas, purity and effectiveness increase the oxygen content of the joint, reduce its strength and increase its post-weld deformation. Electron beam welding and laser beam welding are used. The following is a description of precision welding and precautions for TC4 titanium alloy. 1. Weld hole problem Table of Contents 1. Weld hole problem 2, internal quality of welded part 3. Weld depth and its variation 4, j...

Introduction to the correct choice of lubricating oil in summer

In the summer heat, not only the human body will have various adverse reactions, but also the car. Today, I will share with you one of the things you need to pay attention to in summer-lubricants. The role of lubricating oil The heat generated by the friction between the various moving bearing surfaces of the engine is second only to the heat when the engine cylinder is burned, and the lubricating oil takes the heat away by pressure lubrication, thus ensuring the normal operation of the friction surface. The heated lubricating oil returns to the oil pan through the oil passage for cooling. In terms of the structure of the engine, the oil pan is located under the engine*, and it is exposed to the air. It is generally made of materials with good thermal conductivity, and the lubricating oil is air-cooled through it. The cooled lubricating oil is sent to the lubricated surface again. The viscosity of the lubricating oil is very important for protecting the en...
The production process of KOVAR parts processing has a great relationship with the process, including the process environment elements and the optimization configuration elements of the process route. The process route process needs to be formulated by an experienced person. The following is a brief explanation of the process process. The formulation of the process route process: First, the geometric structure of the parts, the core parts of the accuracy index, the accuracy requirements, material characteristics, heat treatment requirements and performance requirements, etc. should be carefully analyzed, and then the blanks of the parts should be reasonably selected, the cnc machining china equipment should be used reasonably, and reasonable measures should be taken. Many process links such as stress process measures are reasonably configured. In the production organization process, the process is strictly implemented. During the process, strict inspection is performed. For general p...