Study on the Attached Drive Impeller in the Small Four-Wheel Tractor

The attached drive impeller is specially designed to improve the performance of small four-wheel tractor with an 8.8～11 kW engine for deep plowing in dryland. This paper studied the main parameters that influence the performance of attached drive impeller and carried out the controlled tests in the field. The results showed that the drawbar power of the tractor equipped with the drive impeller was improved by 19.3%, while the traction efficiency was improved by 19.4%. The tractive force applied on the rear hook of the tractor can reach 4 000 N when the wheel-slip rate is under 20%, which can completely meet the demand for deep plowing in the field of dry-land whose soil resistance is under 56 kPa.