SU1173051A1 - Method of combustion engine regulation at low load and idling - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to engine-building and allows for increased efficiency. Each cylinder (C) to be shut off is disconnected from the intake manifold at the time of the intake and the gases filling it additionally expand during this course. At the end of the expansion stroke, this C is filled with exhaust gases from the common exhaust path. This embodiment eliminates the cost of useful power to absorb the charge in switchable Cs, as well as on the friction of parts in switchable Cs due to the increase in their temperatures. The ability to turn off various number C - allows you to provide the maximum load in non-disconnected Ts. 1 sludge. (L

Description

The invention relates to the field of engine building, and in particular to methods of regulating internal combustion engines.

The purpose of the invention is to improve the efficiency.

The drawing shows a diagram of the control system for an in-line four-stroke engine.

The system contains cylinders 1,2,3,4 Yu of the engine, connected to an intake manifold consisting of pipes Sj6,7,8 and an intake manifold 9, and an exhaust tract consisting of exhaust pipes 10.1 G, 1'2.13, connected to a common manifold for all cylinders 14. In the inlet pipes 5,6,7,8 control valves 15, 16,17,18 are installed.

The engine can be adjusted by switching off cylinder groups such as 1,3 and 4 or 2 and 3 or 1 and 4.

The way to regulate the engine by turning off cylinders 2 and 3 is as follows.

Simultaneously with turning off the fuel supply to cylinders 2 and 3, each of them is disconnected from the intake manifold: intake pipes 6 and 7 and intake manifold 9.30

At the same time, in the disconnected cylinders 2 and 3, when the pistons move from top dead center to bottom dead center at the intake strokes, the gases remaining in it expand, for example, these gases are compressed during the compression stroke, and during the subsequent expansion stroke at the end of it, a vacuum occurs in the cylinder * So as cylinders 2 and 3 are connected by pipes 11 and 12 with a common exhaust manifold 14 for switchable and non-switchable cylinders, and the exhaust valves in cylinders 2 and 3 open at the end of the expansion strokes before the pistons reach bottom dead center, then the exhaust gases during each operating cycle from the non-disconnected cylinders 1 and 4, which entered the common manifold 14, then enter the disconnected cylinders through the outlet pipes 11 and 12 from the exhaust manifold 14.

The engine management system works as follows.

Simultaneously with the cutoff of the fuel supply $$ to the disabled cylinders 2 and 3, valves 16 and 17 are turned, closing the inlet to cylinders 2 and 3 from the exhaust manifold 9 through the inlet pipes 6 and 7. The exhaust gases from the common exhaust manifold enter the disabled cylinders and 3 when opening the outlet valve, heating them up.

During long-term operation of the engine with a load, to overcome which there is enough power developed by two cylinders, for uniform wear of engine parts, you can periodically turn on the disabled cylinders 2 and 3, while disconnecting cylinders 1 and 4. In this case, simultaneously with the resumption of fuel supply to cylinders 2 and 3, valves 16 and 17 turn, opening the entrance to the cylinders from the intake manifold 9 through inlet pipes 6 and 7. In cylinders 1 and 4, the fuel supply is stopped, valves and 18 turn, closing the entrance to the cylinders from the intake manifold 9 through the inlet pipes 5 and 8..

If the engine load is reduced to such an extent that to overcome it, there is enough power developed by one cylinder, for example, the fuel supply to cylinders 1, 2 and 4 is turned off, while valves 15, 16 and 18 are rotated, closing the inlet to the cylinders from the intake collector 9 through inlet 'pipes 5,6 and 8.

The use of the method and system makes it possible to exclude the cost of useful power for sucking the charge into the disconnected cylinders, as well as friction of parts in the disconnected cylinders due to an increase in their temperature caused by the heating of the exhaust gases of the non-disconnected cylinders. This will improve fuel efficiency. The ability to turn off a different number of cylinders allows you to ensure maximum load in non-disconnected cylinders. Since the greatest efficiency of operation is achieved at maximum cylinder load, the greatest engine efficiency will be provided when operating in a wide range.

Claims (1)

The invention relates to the field of engine construction, in particular to methods for controlling internal combustion engines. The purpose of the image 1) ethen is to improve the energy efficiency. The drawing shows a diagram of a four-stroke engine control system. The system comprises an engine 1,2,3,4 engine, connected to an intake manifold consisting of nozzles 5,6,7,8 and an intake manifold 9, and an exhaust duct consisting of exhaust nozzles lOjlT, T2,13, connected to a manifold 14 common to all cylinders, valves 15, 16,17,18 are installed in the inlets 5,6,7,8, the engine can be adjusted by disconnecting groups of cylinders, for example, 1.3 and 4 or 2 and 3 or 1 and 4. The method for controlling the engine by disengaging cylinders 2 and 3 is as follows. Simultaneously with the disconnection of the fuel supply to cylinders 2 and 3, each of them is disconnected from the intake manifold of the inlet manifolds 6 and 7 and the intake manifold 9. expansion of the remaining gases, we read that these gases are compressed during the compression stroke, and the next expansion in the end of the cylinder causes a vacuum. Since cylinders 2 and 3 are connected by nozzles 11 and 12 with common for disconnected and non-disconnectable cylinders With the collector 14, and the inlet valves in the cylinders 2 and 3 open at the end of the expansion strokes before the pistons arrive at the bottom dead center, the exhaust gases during each operation cycle from the disconnected cylinders 1 and 4, which enter the common collector 14 then enter the switchable the cylinders through the exhaust pipes 11 and 12 from the exhaust manifold 14, the engine management system works as follows. Simultaneously with the shutdown of the fuel supply to the cylinders 2 and 3 to be shut off, valves 16 and 17 are turned, closing the inlet to cylinders 2 and 3 from the exhaust manifold 9 through the inlets 6 and 7. Exhaust gases from the common exhaust manifold 14 enter the switchable cylinders 2 and 3 at opening the outlet valve, heating them. During long-term operation of the engine with a load, to overcome which enough power developed by two cylinders, to evenly wear engine parts, it is possible to periodically switchable cylinders 2 and 3 into operation, disconnecting cylinders 1 and 4, in this case simultaneously with the resumption of fuel supply cylinders 2 and 3, valves 16 and 17 turn, opening the entrance to the cylinders from the intake manifold 9 through the inlets 6 and 7, to cylinders 1 and 4, the fuel supply is stopped, valves 15 and 18 are turned, closing the entrance to the cylinders from intake manifold 9 through inlets 5 and 8,. In the case of reducing the engine load to such an extent that to overcome it, enough power developed by one cylinder is turned off, for example, the fuel supply to cylinders 1,2 and 4, while valves 15,16 and 18 are turned, closing the entrance to the cylinders from the intake the collector 9 through the inlets 5,6 and 8. The use of the method and system eliminates the cost of useful power for suction of charge into switchable cylinders, as well as friction of parts in switchable cylinders due to increasing their temperature due to Shimi gas cylinders can not be disabled, uluchshits As a result, fuel economy. The ability to shut off a different number of cylinders allows for maximum load in non-disconnected cylinders. Since the greatest economic efficiency is ensured at maximum cylinder load, the greatest economic efficiency of the engine will be ensured when operating in a wide range. Claim Method A method for controlling an internal combustion engine by charging and exhausting exhaust gases by periodically connecting to a common intake manifold and common exhaust path of cylinders in which pistons move, making suction, compression, expansion, and displacement strokes a part of the cylinders at low loads and idling, characterized in that, in order to ensure the efficiency of the engine, each switchable cylinder is disconnected from the 1173 with 1.4 inlet line and further expand the gases filling it during this stroke, and at the end of the expansion stroke this cylinder is additionally filled with exhaust gases from the common exhaust path and partially displaces the resulting mixture into the same path during the displacement course. I Air / Spent eaz