Abstract: Take the oil corrector design of a 186FA diesel engine for example, the working principle of oil corrector is analyzed, and the calculation and design defects in the existing literature are pointed out, meanwhile the relationship between design parameters and performance of speed characteristics for diesel engine is illustrated, and the design and calculation method for single-cylinder diesel engine oil corrector is given. By using this method, the values of correction stroke, starting oil enrichment stroke, the maximum force of correcting spring, and the pre-tightening force of starting spring can be accurately obtained. The test of the developed oil corrector provided with oil correction and starting enrichment shows that the performance of speed characteristics on 186FA diesel engine fully meets the relevant assessment requirements of national standards, and the products are already mass produced, thus providing technical assurance for the development of second-generation single-cylinder diesel engine for mobile application.

Key words: Correction, Injection volume, Single-cylinder diesel engine, Speed adjusting, Speed characteristic