RU170957U1 - Electronic engine management system - Google Patents

Abstract

The invention relates to engine control systems, in particular to stabilization systems for internal combustion engines. The electronic engine management system includes a controller, a crankshaft position sensor, nozzles, an ignition coil, spark plugs, pressure sensors in the intake manifold of each cylinder, pressure sensors in the exhaust manifold of each cylinder, an angular acceleration sensor for the engine shaft mounted against the ring gear of the flywheel. The use of this electronic control system of an internal combustion engine increases engine stability by 10%, which makes it possible to reduce the cost of its repair by 25-30%.

Description

The invention relates to engine control systems, in particular to stabilization systems for internal combustion engines.

A known method of increasing the stability of the internal combustion engine, which consists in measuring the pressure of the products of fuel combustion on the piston and changing the pressure on the piston of the products of combustion of the fuel mixture, determining the magnitude of the forces of the reciprocating movement of the moving masses of the piston and the crank mechanism of the internal engine combustion in the direction along the axis of the cylinder of the internal combustion engine. Based on the results obtained, for each half-turn of the crankshaft, the total value of the tangential force on the crank of the crankshaft, the total value of the force is the pressure of the combustion products of the fuel mixture in the cylinder and the total inertia force of the reciprocating movement of the masses of the piston and crank mechanism for each cylinder, after which they install a flywheel on the motor shaft and provide rotation of the crankshaft with a constant angular velocity. [Patent No. 2267623, IPC F02B 75/06, F02D / 35/00 11/29/2004].

The disadvantage of this method of increasing the stability of the internal combustion engine is its complexity.

The closest in technical essence is the electronic control system of the internal combustion engine, which includes a controller, a crankshaft position sensor (DPKV), nozzles, ignition coil, spark plugs.

The disadvantage of this system is the inability to control the stability of the internal combustion engine.

The technical result consists in providing stability control of an internal combustion engine.

The technical result is achieved by the fact that the electronic engine control system, which includes a controller, a crankshaft position sensor, nozzles, ignition coil, spark plugs, further comprises pressure sensors in the intake manifold of each cylinder, pressure sensors in the exhaust manifold of each cylinder, an angular acceleration sensor motor shaft mounted against the flywheel gear.

The electronic control system of the internal combustion engine is illustrated in the diagram.

The electronic control system of the internal combustion engine contains a controller 1, a crankshaft position sensor (DPKV) 2, nozzles 3, an ignition coil 4, spark plugs 5, pressure sensors 6 in the intake manifold 7 of each cylinder, pressure sensors 8 in the exhaust manifold 9 of each cylinder and the sensor 10 of the angular acceleration of the motor shaft mounted against the ring gear of the flywheel is connected to the controller 1.

The electronic control system of the internal combustion engine operates as follows. When the engine is running in accordance with the readings of the DPKV sensor 2, at the required times, the nozzles 5, controlled by the controller 1, supply gas to each cylinder, and the spark plugs 3 connected to the ignition coil 4, also controlled by the controller 1, ignite the gas-air produced in the cylinders mixture. A balanced engine has certain angular acceleration values detected by the sensor 10. Pressure sensors 6 record the air pressure in the intake manifold 7, pressure sensors 8 record the air pressure in the exhaust manifold 9. If the compression ratio in one of the cylinders decreases due to wear of the piston rings and cylinder liner or due to the loss of density of the valves of the cylinder, the force on the piston changes when the gas-air mixture is ignited, the engine becomes unbalanced. This fact is established by comparing the pressure in the intake and exhaust manifolds and changing the magnitude of the angular acceleration. If the pressure difference and the angular acceleration value, the established allowable values entered in advance into the controller are exceeded, the controller changes the gas supply by the nozzle of the corresponding cylinder and adjusts the moment of supply of the spark to the spark plug of this cylinder until the engine is balanced.

If the balance cannot be restored, a signal is given about the malfunction of the corresponding cylinder. Permissible limits of balance change are also entered into the controller in advance. The electronic control system works periodically. If a balance deviation is established, the monitoring period can be automatically shortened by a value set in advance.

The proposed electronic control system of the internal combustion engine provides engine stability with increased wear of parts of one of the cylinders, providing a reduction in the probability of engine failure, as well as the load on the mechanical transmission of the car.

A prototype of an electronic control system for an internal combustion engine was manufactured and tested in the laboratory of the department of technical service, mechanics and electrical engineering of FSBEI HE Omsk State Aviation Administration and tested in laboratory conditions.

Using the proposed electronic control system of an internal combustion engine increases engine stability by 10%, which makes it possible to reduce the cost of its repair by 25-30%.

Sources of information taken into account when preparing the application

1. Patent No. 2267623, IPC F02B 75/06, F02D / 35/00 11/29/2004.

2. The electronic engine control system for cars of the LADA PRIORA, LADA KALINA, LADA 4 × 4 families with the ME 17.9.7 / M75 EURO-4 controller - device and diagnostics. / P.N. Hristov, D.A. Prudsky, V.V. Reva, V.A. Zimin - Tolyatti, 2013 .-- 329 p. (Prototype).

Claims (1)

An electronic engine management system including a controller, crankshaft position sensor, nozzles, ignition coil, spark plugs, characterized in that the system is additionally equipped with pressure sensors in the intake and exhaust manifolds of each cylinder, an angular acceleration sensor mounted against the ring gear flywheel.

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