The motor brake of a compressor type

Abstract

The accident rate in road transport remains very high and it is necessary to consider all the factors that affect this process to reduce it. In this regard, special attention should be paid to the process of long-term braking, the negative manifestations of which require the development of additional braking systems (retarding retarders) for vehicles operating in mountainous areas, primarily in the sphere of passenger transport. Transmission retarder brakes, which provide sufficient braking performance, have a number of disadvantages that hinder their use. The existing motor brakes-retarders show insufficient retardation and Kuban State Agrarian University conducted researches to improve their effectiveness. The compressor brake mode was experimentally studied after the theoretical analysis, in which an increased pressure was created in the inlet collector, and at the end of the compression stroke, the air from the cylinder was released through a special valve back into the system, which created the braking effect. The experiments have confirmed the possibility of a significant increase in the braking torque of the engine in the compressor brake mode, when both flaps are closed - the exhaust flap after the exhaust collector and the inlet collector before the carburetor, and compressed air is supplied to the inlet collector at different pressures. Then the braking torque increases in comparison with the engine braking more than 3 times.