Design and Development of a Fuel Injector Nozzle Cleansing Machine for Small Scale Workshops

Abstract

The development of a fuel injector nozzle cleansing machine addresses the challenge of clogged and inefficient nozzles in internal combustion engines, particularly within small-scale workshops. Conventional cleaning methods are slow, hazardous, and often ineffective, leading to poor spraying patterns and reduced engine efficiency. This study presents the design, fabrication, and performance evaluation of a dual-process injector nozzle cleansing machine capable of both cleaning and spray testing. The machine consists of a mild steel frame stand, fuel tank, submersible fuel pump, nozzle rail, and 12V DC power supply. Fabrication involved welding, fastening, and soldering to achieve a rigid and safe structure. Performance evaluation was conducted using anti-rust thinner for cleansing and petrol (PMS) for spray testing at a pressure of 8 psi. Experimental results revealed an average cleaning efficiency of 88% and spraying efficiency of 95% across nozzles with two, three, and four holes. Findings indicate that nozzles with a higher number of holes demonstrated faster cleaning and more effective spray distribution. The study concludes that the proposed machine provides a cost-effective, safe, and reliable alternative to industrial injector cleaning systems, making it suitable for small-scale workshops and automotive maintenance applications.