This article discusses the method of assessing the effi ciency of operation of vehicles with diff erent types of power plants throughout their life cycle. At the moment, in the production of any product, including a car, the so-called assessment of the full life cycle of production is used. It implies the collection and evaluation of material and energy fl ows throughout the life of the product: from the moment of its production and the corresponding costs of energy and natural resources to its operation and, ultimately, utilization with further waste generation and return of part of the materials to the production of new products. In order to compare vehicles running on diff erent types of fuel, in addition to assessing the energy effi ciency of the engine (effi ciency) and the torque on the wheels of the car, the analysis of the entire vehicle, including its fuel throughout the life cycle, should also be carried out. The developed technique includes various characteristics that allow to consider vehicles with diff erent power plants and to justify the diff erence in the corresponding indicators at each stage of the full life cycle.

The mass air fl ow rate is one of the important parameters when testing an internal combustion engine. This parameter allows to judge the completeness of fuel combustion, its load. Recommended regulatory instruments instruments for measuring air fl ow to the engine , when the tests are not very suitable for widespread use due to their cost. This also applies to devices for measuring air fl ow principle, which is based on the thermoanemometric method. Automotive mass air fl ow sensors are not suitable for use in test equipment due to long-term instability of parameters and non-compliance with the metrological requirements. The article discusses the application of the method of measuring air fl ow, the pressure drop along the length of the pipe (air intake). It is shown that this method at low cost allows to measure the air fl ow rate of the engine. In this case, the measurement error does not exceed the permissible according to the normative documents for testing engines.

The article discusses modern technologies for diagnosing the technical condition of agricultural automotive equipment on the example of a John Deere tractor. A description of the John Deere tractor and electronic systems is given. Modern tractors are equipped with microprocessor-based control systems with diagnostic capabilities. This makes it possible to timely inform the operator about possible malfunctions of the working systems of the tractor, for example, the engine or brake system. The system of digital communication and control of the electric devices of the vehicle — the CAN interface — allows you to collect data from all devices, exchange information between them, manage them.

In article there is a description of a method of collecting statistical data for calculation of reliability by means of continuous monitoring of the resource parameters of technical condition characterizing wear of details and interfaces.

The analysis of methods and means of preparation of a stable water-fuel emulsion, as well as the results of its preparation on the technology of Tambov state tech-nical University are presented.

based on the analysis of the state of the engineering system in the agro-industrial complex of Russia and the results of research, recommendations for the implementation of resource-saving and innovative opportunities in the technical service of agricultural machinery are given.