RU2209995C2 - Internal combustion engine fuel injection system with air suction, compression, working strokes and exhaust - Google Patents

Abstract

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: invention relates to fuel injection devices of engines. Proposed injection system of engine consists of low-pressure electric nozzle connected with fuel supply system and with fuel supply system operation control microprocessor. Low-pressure electric nozzle is installed in lower part of cylinder over piston when the latter is in bottom dead center. EFFECT: provision of reliable and fuel-saving injection system of internal combustion engine. 1 dwg

Description

 This invention relates to the field of engine manufacturing and can be used in enterprises producing internal combustion engines.

 Known fuel injection system "Mono-Jetronic" (see Ross Tweg. Gasoline injection system. -M .: Publishing house "Behind the wheel", 1999 -P.90-91), mounted on an internal combustion engine with air intake strokes, compression, stroke and exhaust (four stroke) and consisting of a low pressure electro-nozzle mounted on the intake manifold in front of the throttle and connected to the fuel supply system.

 Common features of the known system with the invention are the following features: the presence of low pressure electric nozzles connected to the fuel supply system.

 However, the long path of the working mixture entails large losses of fuel, which settles on the walls of the collector. In this case, the engine cylinders are not uniformly filled with the working mixture, which leads to a malfunction of the engine.

 Known closest to the proposed invention, the fuel injection system (see Ross Tweg. Gasoline injection system. -M .: Publishing house "Behind the wheel", 1999, S. 105-106), mounted on an internal combustion engine with air intake strokes, compression, stroke and exhaust (four-stroke) and consisting of a low-pressure electric nozzle installed in the intake manifold in front of the cylinder inlet valve and connected to the fuel supply system and microprocessor to control its operation.

 Common features of the known fuel injection system in a four-stroke internal combustion engine and the proposed invention are the following features: low-pressure electric nozzle connected to the fuel supply system and a microprocessor controlling its operation. In this fuel injection system, fuel is injected into the intake manifold and, mixed with air, enters the combustion chamber of the engine through the intake valve. Most of the fuel deposits on the walls of the intake manifold, and therefore, the engine starts up slowly at high fuel consumption.

 The objective of the invention is to develop a reliable and economical fuel injection system in a four-stroke internal combustion engine.

 The technical result that will be obtained during the implementation of this invention is the instant start of the engine.

 The fuel injection system in an internal combustion engine with air intake, compression, travel and exhaust strokes, consisting of a low pressure electric nozzle connected to a fuel supply system and its operation microprocessor, is characterized in that the low pressure electric nozzle is installed in the lower part of the engine cylinder, above the piston when it is at bottom dead center.

 The use of direct fuel injection into the engine cylinder eliminates fuel loss, and from the first injection the engine starts instantly.

 The drawing shows the proposed system of fuel injection into an internal combustion engine with strokes of air intake, compression, stroke and exhaust. On the engine 1, in the lower part of the cylinder 2, but above the piston 3 located at the bottom dead center, an electric nozzle 4 is installed, which is connected to the fuel supply system 5 and to the microprocessor 6.

 The proposed fuel injection system operates as follows. When the piston 3 of the engine 1 finishes the air intake stroke, at this moment the microprocessor 6 sends a command to the fuel injector 4 for fuel injection, after which the piston 3 starts the compression stroke, and then the stroke of the stroke and the exhaust stroke, etc.

Claims (1)

 A fuel injection system in an internal combustion engine with air intake, compression, travel and exhaust strokes, consisting of a low pressure electro nozzle connected to a fuel supply system and a microprocessor controlling its operation, characterized in that the low pressure electro nozzle is installed in the lower part of the cylinder above the piston at the time it is at bottom dead center.