New energy vehicle-mounted oil-water-cooled piston type air compressor

By adopting a recessed oil pan at the bottom of the crankcase and a water cooling system in an oil-lubricated piston air compressor, the problems of overall machine size and lubrication effect are solved, resulting in increased lubricating oil volume, improved cooling effect, and improved ease of assembly and maintenance.

CN121993379APending Publication Date: 2026-05-08NELY CORP LTD
10 Cites 0 Cited by

Patent Information

Application Number
CN202610467078.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-10
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing oil-lubricated piston air compressors are not advantageous in new energy commercial vehicles due to space layout and lightweight requirements. This results in a smaller overall size, higher lubricating oil level, poor lubrication effect, higher oil content in exhaust gas, and inconvenience in assembly and maintenance.

Method used

The crankcase features a removable, recessed oil pan at the bottom, combined with a water-cooling system. This system includes water passages in the crankcase wall, water-cooling channels in the drive box, and water-cooling channels in the compression cylinder assembly, creating a complete water-cooling system. This eliminates the space occupied by the cooling fan and air guide, increases the amount of lubricating oil, and improves lubrication and cooling effects. Additionally, an oil filter assembly is installed in the breather chamber to filter oil mist.

Benefits of technology

Without increasing the overall length and width of the machine, the amount of lubricating oil and the cooling effect are improved, the oil content in the exhaust is reduced, the air pressure pulsation noise is reduced, and the assembly and maintenance process is simplified.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides a new energy vehicle-mounted oil-water-cooled piston type air compressor, which belongs to the technical field of air compressors, and comprises a crankcase, a driving box, a crankshaft assembly and a compression cylinder assembly, the bottom of the crankcase is connected with the oil pan to form a crankshaft cavity, a breathing cavity is formed in the top of the crankcase and communicated with the crankshaft cavity through a breathing hole, and a water passing hole is formed in the wall of the crankcase. A first water cooling channel is arranged in the box wall of the driving box; one end of the crankshaft assembly penetrates into the crankcase, and the other end of the crankshaft assembly penetrates into the driving box and is connected with the power rotor; the compression cylinder assembly is arranged in the crankcase and is in transmission connection with the crankshaft assembly, a second water cooling channel is formed in the compression cylinder assembly, and the second water cooling channel is communicated with the first water cooling channel through a water passing hole; the oil filtering assembly is arranged at a cavity opening of the breathing cavity and connected with the air inlet end of the compression cylinder assembly. According to the new energy vehicle-mounted oil-water-cooled piston type air compressor, the requirements for lubrication, cooling and the oil content of exhaust can be met, and meanwhile the structural compactness of the whole air compressor is improved.
Need to check novelty before this filing date? Find Prior Art