Multi-cylinder internal combustion engine (ice)

FIELD: engines and pumps.

SUBSTANCE: multi-cylinder internal combustion engine is proposed, comprising a plurality of intake ports, a plurality of injectors of fuel injection into the cylinder, and an electronic control unit. The electronic control unit is designed to initially set the value of the control parameter of the multi-cylinder engine, separately for each of the cylinders, so that there is a general pattern between the distribution of the difference in the control parameter value for each of the cylinders from the control parameter value for the reference cylinder between the cylinders and the distribution of the remoteness difference of a narrowed section in each of the cylinders from the remoteness of a narrowed section in the reference cylinder between the cylinders. The control parameter is a parameter which determines the air-fuel mixture ratio near the spark plug at the time of ignition during a combustion mode with a layered fuel charge distribution.

EFFECT: ensuring the same fuel-air ratio in the mixture near the spark plug at the moment of ignition in all cylinders.

6 cl, 16 dwg



Same patents:

FIELD: engines and pumps.

SUBSTANCE: essence of the method consists in a programme task and further implementation of high voltage levels of each individual spark discharge in any range of ICE revolutions using a controller, to ROM of which there loaded are programmes with programming constants of high voltage parameters in functional dependence on combination and intensity of ICE operating modes involved in its control, which are chosen from the number of its revolutions, load, threshold temperature of cooled liquid and degree of working compression (including variable). During ICE operation, a controller processor selects as per technical information of sensors of the selected modes in ROM working programme a programming constant of an optimum high voltage level of the forthcoming spark discharge with further implementation of this parameter in each ICE cylinder. At the interval of voltages from minimum allowable as per conditions of breakdown of discharge devices of ignition plugs to maximum restricted by the limit of electrical strength of a high-voltage circuit.

EFFECT: effective operation of ICE and improving environmental safety, thermal efficiency and specific power-to-size ratio.

4 cl, 7 dwg

FIELD: transport.

SUBSTANCE: method consists in the following: with each engine revolution time of cylinder piston passing through characteristic (reference) point is fixed, crankshaft revolution period and engine load are measured, from results of these measurements optimal timing angle is determined and at the moment of cylinder piston passing through point advancing top dead centre for an angle equal to calculated optimal timing angle the ignition pulse is generated in ignition coil control circuit and on ignition plugs, additionally, engine temperature, air-and-fuel mixture temperature and fuel injector opening duration are measured, and when optimal timing angle is determined pressure in engine cylinder versus crankshaft angle response characteristic is calculated for each of its possible values with regard to results of these measurements, according to calculated response characteristic, the crankshaft angle is determined for which this pressure is maximal, herewith, as rough value of optimal timing angle that value is assumed at which crankshaft angle corresponding to maximum pressure in cylinder is most close to specified, selected in the range of 185 to 195, actual crankshaft angle is measured at which pressure in cylinder is maximal, and as refined value of optimal timing angle its rough value decreased by difference between specified and measured in previous crankshaft revolution actual crankshaft angle value corresponding to pressure maximum in cylinder is assumed.

EFFECT: higher combustion efficiency of air-and-fuel mixture.

2 dwg

FIELD: engines and pumps.

SUBSTANCE: firing angle control device incorporates pressure transducer connected to electronic control unit output. Stepped motor connected with rod is connected to the other output of said control unit. Said rod is rigidly connected with platform displacing towards spark delay or advance.

EFFECT: optimised operating conditions, decreased harmful emissions.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed method consists in registering piston reference point, measuring crankshaft cycle period, engine load, engine temperature, incoming air temperature and fuel jet opening period, determining advance angle and generating ignition pulse in ignition coil. In determining advance angle, its variation range is divided into some discrete magnitudes. Dependence of cylinder pressure on crankshaft angle is calculated proceeding from measurements made to determine maximum pressure crankshaft angle. Discrete magnitude whereat maximum cylinder pressure crankshaft angle approximates to 10 after TDC is taken to be required advance angle.

EFFECT: increased crankshaft torque.

2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to internal combustion engine control systems. The proposed internal combustion engine control system includes TDC mark 1 made on teeth plate 2 fitted on the engine shaft, sensitive pickup 3 coupled with control unit 4. Note that mark 1 is made on plate 2 with angular shift relative to point 5 on plate 2 corresponding to an actual position of the engine piston at TDC. The circuit between pickup 3 and control unit 4 incorporates input pulse generator 6, processor 7, output pulse generator 8. Processor 7 is furnished with access control unit 9. Processor 7 incorporates also multiplex bus 10 with multiplexer 11 to connect service devices 12 (for example, shock pickup, passenger compartment inside scanning pickup, microwave motion pickup etc). Processor 7 includes data I/O interface allowing the connection of additional service devices to the said processor. For example, PC 13 incorporating an appropriate engine diagnostics software allowing estimating the engine state staying inside the cab. Access control unit 9 represents an electronic lock with a dynamic cryptocode.

EFFECT: higher safety internal combustion engine control system prohibiting unauthorised starting of the engine.

6 cl, 1 dwg

The invention relates to electrical equipment for internal combustion engines

The invention relates to ignition systems for internal combustion engines

The invention relates to electrical motor transport

FIELD: engines and pumps.

SUBSTANCE: proposed engine comprises crankshaft 52, compression piston 72 fitted in compression cylinder 66 to slide therein and engaged with crankshaft 52 to reciprocate in intake and compression strokes per one rpm of crankshaft. Engine comprises expansion piston 74 fitted in compression cylinder 68 to slide therein and engaged with crankshaft 52 to reciprocate in expansion and exhaust strokes per one rpm of crankshaft. It includes, at least, two adapter channels 78 communicating said compression and expansion cylinders 66, 68. Each of said two channels 78 comprises adapter compression valve 84 and adapter expansion valve 86 to make pressure chamber 81 there between. Compression cylinder 66 receives air charge to compress it in, at least, one of said two adapter channels 78 per one crankshaft revolution. Invention covers designs versions and method of engine operation in idling.

EFFECT: maintaining high pressure in idling in adapter channels.

39 cl, 10 dwg, 1 tbl

FIELD: engines and pumps.

SUBSTANCE: intake channel 1 is cast in ICE cylinder block 2 to communicate with engine combustion chamber via valve annular seat 4. Intake channel 1 comprises, in fact, flat surface 6a conjugated with seat 4 via rounded transition zone 7b making rounded ledge 7a in cylinder block body 2. Invention covers also cylinder block head with intake channel, ICE with cylinder block head with intake channel, and method of cylinder block head fabrication.

EFFECT: optimum straight airflow to create large head ahead of valve.

11 cl, 5 dwg

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine (ICE) with split cycle includes crankshaft (52), compression (66) and expansion (68) cylinders, compression (72) and expansion (74) pistons, and spiral bypass channel (38). Compression piston (72) performs inlet and compression strokes per one turn of crankshaft (52). Expansion piston (74) performs expansion and outlet strokes per one turn of crankshaft (52). Spiral bypass channel (38) connects compression (66) and expansion (68) cylinders. Spiral bypass channel (38) includes bypass compression and expansion (41) valves, straight-line (39) and end (40) parts. High pressure cavity is made between bypass valves. Expansion bypass valve (41) includes stock (42) and head (43). Straight-line part (39) is located in end section of spiral bypass valve (38). Spiral end part (44) is an integral part of straight-line part (39). Spiral end part (40) is located above bypass expansion valve (41). Spiral end part (40) represents funnel (44). Funnel (44) is twisted about stock (42). Also, the invention deals with ICE containing two tangential spiral bypass channels (78). Channels (78) connect compression (66) and expansion (68) cylinders. Each tangential spiral bypass channel includes bypass valves (84, 86), straight-line tangential part (100) and spiral end part (102). Spiral end parts (102) are twisted in one direction.

EFFECT: quick flow of flammable mixture, its quick mixing and distribution prior to the beginning of combustion.

16 cl, 11 dwg

Ice cylinder head // 2406852

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine cylinder head comprises combustion engine with intake and discharge openings communicated with intake and discharge channels, ignition source and fuel feed mount assemblies. Intake and exhaust openings at the joint with combustion chamber are cylindrical, while their cross sections and, hence, those of intake and exhaust ducts differ. Intake openings are arranged diagonally relative to cylinder axis. Cylinder axis complies with intersection of lengthwise and lengthwise axes of cylinder head. Intake ducts, tangential in cross section, are curved in plan so that their part terminated in combustion chamber is oriented tangentially to engine cylinder wall, while outlet ducts are curved in plan with their outlet in combustion chamber oriented toward cylinder axis.

EFFECT: optimised engine operating in all operating conditions, reduced toxicity of waste gases.

2 dwg

Diesel engine // 2300650

FIELD: mechanical engineering; diesel engines.

SUBSTANCE: proposed diesel engine contains cylinder block, cylinder covers bolted to cylinder block, connecting rod-and-crank mechanism, valve-timing mechanism, high-pressure pump, auxiliaries drive and lubrication, fuel, cooling and starting systems. Double-acting cylinders are used in engine. Each cylinder is provided with outlet branch pipes from one side in upper and lower parts which are connected through valves of valve timing mechanism with exhaust manifold and through exhaust fan with atmosphere. Inlet branch pipes are made at other side in upper and lower part of each double-acting cylinder. Fitted inside double-acting cylinders are pistons with seals which are connected with crankshaft through connecting rod and piston rod connected with connecting rod. Combustion chamber separated from double-acting cylinders, two chambers per cylinder, are of similar design, being made in form of hollow vessel designed for high pressure. Each combustion chamber has cooling jacket, inlet and outlet branch pipes, outlet branch pipe of one combustion chamber being connected through valve of valve-timing mechanism with upper inlet branch pipe of double-acting cylinder. Outlet branch pipe of other combustion chamber is connected with lower inlet branch pipe of the same double-acting cylinder. Each combustion chamber has nozzle connected by pipeline with high-pressure pump which is kinematically coupled with crankshaft, glow plug being essentially a spiral wound on insulation base and heated by electric current, and inlet scavenging valve communicating with atmosphere through air filter. Cylinder-receiver is furnished with inlet and outlet branch pipes, the latter being connected with inlet branch pipes of each combustion chamber through valves of valve-timing mechanism. Multicylinder compressor whose shaft is coupled with shaft of electric motor supplied by storage batteries or dc generator is pneumatically connected with inlet branch pipes of cylinder-receiver. Inlet branch pipe of said compressor communicates with atmosphere through air filter.

EFFECT: increased efficiency of diesel engine, provision of uniform rotation and load on crankshaft, reduced discharged of non-combusted fuel.

11 dwg

The invention relates to the field of engineering, in particular to the development of diesel engines with undivided combustion chamber

Collector blower // 2078233
The invention relates to the field of internal combustion engines and is intended for use on automotive engines

The invention relates to internal combustion engines

FIELD: engines and pumps.

SUBSTANCE: invention may be used in supercharge diesels. Proposed method is intended for diesel (1) including pipe (2) to feed air into diesel (1), diesel exit gas exhaust pipe (3), diesel soot filter (31) arranged in exhaust pipe (3) and exit gas circulation system (50, 60) to return exhaust gas into diesel (1). Exhaust gas circulation system comprises off-gas circulation line (60) to receive exhaust gas from exhaust pipe (3) downstream of soot filter (31). Method of diesel control consists in setting the threshold (Sth) for amount of soot getting into off gas circulation system. Besides, actual amount (Saa) of said sooth is defined. Now, the procedure of off-gas circulation line protection is actuated if actual amount (Saa) is higher than said threshold (Sth). Besides it discloses the device to this end.

EFFECT: reduced sooting.

12 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed engine comprises compression ratio control mechanism (A) designed to vary compression ratio. Besides, it comprises valve timing control mechanism (B) designed to vary intake valve closing moment wherein preset is the inhibited zone for combination of mechanical compression and intake valve (7) closing moment to inhibit getting of working point in inhibited zone. Said working point represents a combination of mechanical compression degree and intake valve (7) closing moment. Said of mechanical compression degree and intake valve (7) closing moment can vary from current working point in direction towards required one on the side of lower mechanical compression degree without getting in inhibited zone when compression mechanism fails.

EFFECT: required combustion at lower compression ratio at failure of compression control mechanism.

11 cl, 57 dwg

FIELD: transport.

SUBSTANCE: invention relates to transport and can be used in processes of fuel combustion in internal combustion engines (ICE). In the method, both charge stratification and homogeneous air-fuel mixing is provided by means of changing at least one injection parameter. The method consists in adjustment of fuel injection depth by means of changing injection pressure. Injection depth is adjusted within total depth of combustion chamber, and injection pressure is changed either smoothly or in steps, in particular using mode selector. Mode selector provides at least two fixed charge stratification modes with possibility of their selection or switching between them. Herewith, within used modes the injection duration parameter can be set in proportional dependence or in one of types of nonlinear dependence on injection pressure: differential, integral, logarithmic or any other nonlinear dependence.

EFFECT: wider range of fuel depletion degrees which improves efficiency and cleanliness of exhaust ICEs.

8 cl, 1 dwg