27 results about "Spark-ignition engine" patented technology

According to an aspect of the present application, there is provided a radially deformable volume splitter (100; 200) for a fuel injection system (1) of a spark-ignition engine (2). The volume splitter (100; 200) can be tubular and elongate, extending along a longitudinal axis from a first end (102) to a second end (104). The volume splitter (100; 200) can comprise a deformable longitudinal slot (116) operable to deform the volume splitter (100; 200) radially from a first state for insertion into a cavity (18; 218) of the emulsion injection common rail (10) to a second state for use within the cavity (18; 218), and a set of slots (112a-112k) arranged on an outer surface (106) of the volume splitter (100; 200) to connect, in use, an inlet (20) of the cavity (18; 218) to one or more outlets (22a-22d) of the cavity (18; 218).

Spark plug for a spark-ignition engine. Spark plug (10) for a spark-ignition engine comprising: - a first electrode (1), - a second electrode (2), - a third electrode (13), - a fourth electrode (23), - a first inter-electrode gap (14) located between the first electrode (1) and the third electrode (13), - a second inter-electrode gap (24) located between the second electrode (2) and the fourth electrode (23), and - a base (8), particularly in the lower part of the spark plug, the third and fourth electrodes (13, 23) forming part of the base (8). Figure for the abbreviation: 1

The present invention addresses the problem of suppressing an excessive decrease in the output torque of an engine during execution of an inter-cylinder correction process. A drive control device is applied to a vehicle provided with a spark ignition engine having a plurality of cylinders. A first processing circuit of the drive control device executes inter-cylinder correction processing for correcting fluctuations in the magnitude of engine torque at the ignition timing of a plurality of cylinders and adjusting the amount of fuel supplied to the cylinders or the ignition timing for each of the plurality of cylinders. Lower limit protection is set for the amount of fuel supplied to the cylinder or the correction amount of ignition timing when the inter-cylinder correction process is executed.

A method of removing deposits in a direct injection spark ignition engine, the method including combusting in the engine a gasoline fuel composition having a quaternary ammonium salt additive wherein the quaternary ammonium salt additive includes the quaternised reaction product of a hydrocarbyl substituted succinic acid derived acylating agent and a compound able to react with said acylating agent and which includes a tertiary amine group; in which each molecule of the hydrocarbyl substituted succinic acid derived acylating agent includes on average at least 1.2 succinic acid moieties

This method for heating a pollution control catalyst in a direct-injection spark-ignition engine comprising a piston cylinder driven between a top dead center (H) position and a bottom dead center (B) position by a rotating crankshaft includes, during each fuel injection cycle: - a stratified injection stage (17) of fuel into the cylinder, beginning between 0° and 90° crankshaft angle after the piston has passed its top dead center (H), and during an expansion phase (D) in the cylinder; and - an ignition stage (19), beginning between 2° and 15° crankshaft angle after the end of the stratified injection stage (17). Figure for the abbreviation: Fig. 5

Systems and methods for spark ignition in a combustion engine are provided. The spark ignition system includes a terminal, a magnetic body, an insulating body, and a grounding body. The spark ignition system further includes a center electrode electrically connected to the terminal and protruding into a combustion chamber. The grounding body includes a body section and an inclined section. The spark ignition engine includes a combustion chamber and a spark ignition system. The method includes applying a voltage to a spark ignition system, thereby generating a spark.

A radially deformable volume splitter of an emulsion injection common rail for a fuel injection system of a spark ignition engine. The volume splitter may be tubular and elongate, extending along a longitudinal axis from a first end to a second end. The volume splitter may comprise: a deformable longitudinal slot operable to radially deform the volume splitter from a first state for insertion into a cavity of the emulsion injection common rail to a second state for use inside the cavity; and a set of grooves, arranged on an outer surface of the volume splitter, for connecting an inlet of the cavity to one or more outlets of the cavity, in use.

The present disclosure relates to assemblies for engines such as pre-combustion chamber assemblies for spark ignition engines. In one example, a pre-combustion chamber assembly includes an ignition chamber adapted to contain at least one electrode of a spark generator. The ignition chamber being adapted to communicate with a main engine combustion chamber via a plurality of pre-chamber ports. The ignition chamber communicates for removal therefrom of exhaust gas residuals to a distinct storage chamber via at least one transfer port. The ignition chamber includes a single substantially cylindrical entrance channel leading from said pre-chamber ports in a direction towards an ignition region of the ignition chamber. The ignition region having a larger cross-section than the entrance channel.

A method of removing deposits in a direct injection spark ignition engine, the method including combusting in the engine a gasoline fuel composition having a quaternary ammonium salt additive wherein the quaternary ammonium salt additive includes the quaternised reaction product of a hydrocarbyl substituted succinic acid derived acylating agent and a compound able to react with said acylating agent and which includes a tertiary amine group; in which each molecule of the hydrocarbyl substituted succinic acid derived acylating agent includes on average at least 1.2 succinic acid moieties.

The invention relates to an integrated electric starting mechanism, an electric starting chain saw and a gardening tool powered by a spark ignition type engine to at least solve the problem that an electric starting mechanism of an existing electric starting mechanism is complex in assembly, the integrated electric starting mechanism comprises a shell, a driving motor is arranged in the shell, the driving motor is provided with an output end, and the output end of the driving motor is connected with the spark ignition type engine. The shell is provided with a coupling mechanism which can be used for being matched with a flywheel assembly on a tool to be started, and the coupling mechanism is in fixed or transmission connection with the output end.

A lubricant composition for a direct injected, boosted, spark ignited internal combustion engine that comprises one or more molybdenum-containing compounds and one or more calcium detergents is disclosed. This disclosure also relates to a method for reducing or preventing low speed pre-ignition (LSPI) in the course of at least one oil change interval.

This disclosure relates to the use of di(alkyl substituted phenyl)amine antioxidants as additives in lubricant compositions having good oxidation properties in engine crankcase applications, especially in compression ignited engine and or spark ignited engine applications, where the antioxidant comprises less than 0.1 mass% unsubstituted diphenylamine, from 0 to 20 mass% of mono-C9-alkyl substituted diphenyl amine and tri-C9-alkyl substituted diphenyl amine, and 80 to 100 mass% di-C9-alkyl substituted phenyl amines based upon the weight of the unsubstituted diphenylamine, and the mono-, di- and tri-C9-alkyl substituted phenyl amines.

A methane and hydrogen injection device is provided. The methane and hydrogen injection device includes a first methane injector, a second hydrogen injector, a single common injection pipe. The injectors are associated together so as to produce a mixture of methane and hydrogen with a variable concentration ratio, and the common injection duct is shaped to be operatively connected to an intake manifold of a spark-ignition internal combustion engine.

Systems and methods for spark ignition in a combustion engine are provided. The spark ignition system includes a terminal, a magnetic body, an insulating body, and a grounding body. The spark ignition system further includes a center electrode electrically connected to the terminal and protruding into a combustion chamber. The grounding body includes a body section and an inclined section. The spark ignition engine includes a combustion chamber and a spark ignition system. The method includes applying a voltage to a spark ignition system, thereby generating a spark.

The present invention provides a spark-ignition engine that makes it possible to improve net thermal efficiency.　Provided is a spark-ignition engine 1 comprising a main chamber 10 that is defined by a cylinder 2 and a piston 3, and a pre-chamber 20 that has an ignition means 204, wherein: a plurality of communication holes 201a are provided and communicate the pre-chamber 20 with the main chamber 10; an air-fuel pre-mixture having an excess air ratio exceeding the flame propagation limit is supplied to the main chamber 10; and an air-fuel mixture having an excess air ratio at which flame propagation is possible is supplied to the pre-chamber 20.

Method of supplying a spark-ignition internal combustion engine is provided. The method includes a mixing procedure, on board the vehicle, of methane and hydrogen and in which a ratio between methane and hydrogen is determined at least as a function of a methane quality. A spark ignition internal combustion engine includes at least one cylinder having an intake manifold and at least one methane and hydrogen injection device.

Unleaded aviation gasoline. An aviation gasoline fuel blend includes an unleaded aviation gasoline base fuel, with an effective amount of selected alkyl benzenes to improve the functional engine performance to avoid harmful detonation sufficient to meet or exceed selected standards for detonation performance requirements in full scale aircraft piston spark ignition engines designed for use with Grade 100LL avgas. Suitable alkylated benzenes may include a mixture of xylene isomers. Aromatic amines, such as m-toluidine, may also be added to increase MON. Base fuels may be a high quality aviation alkylate, or may be a commercial iso-octane, or a mixture of high quality aviation alkylate enhanced by iso-octane, or by commercial iso-octane mixtures, and may include iso-pentane or butane or both iso-pentane and butane in sufficient quantity to provide appropriate vapor pressure for the final fuel blend.

On the basis of determining the first ethanol ratio value (RATE) obtained with a positive or negative uncertainty of x%, a corrected ratio value (RATEcorr) is determined by subtracting x% from the first value (RATE), and for each point in the zone, the concentration set point on the thermal protection zone is adjusted to a value corresponding to the corrected ratio.

A method of agglomerating nanoparticles in an exhaust stream resulting from combustion of a gasoline fuel composition in a direct injection spark ignition engine, the method comprising adding one or more quaternary ammonium compounds to the gasoline fuel composition as an agglomeration additive.

An internal combustion engine (1), specifically a spark ignition engine, comprises a spark plug (23) projecting into a prechamber (24) of a combustion chamber (21), and a fuel injector (20) which can be switched over in such a way that a variable proportion of the injected fuel reaches the prechamber (24).

To provide an improved lubricating composition effective for preventing or reducing low-speed pre-ignition in an engine and for preventing or reducing corrosion of engine components.SOLUTION: A lubricating composition comprises a base oil combined with a cyclic calcium chelate complex, and optionally further comprises an additional additive.SELECTED DRAWING: None

The invention discloses an injection strategy collaborative optimization method for a hydrogen direct injection engine. In a working condition domain of 1200 r / min, BMEP = 2-8 bar and lambda = 1.0-2.3, a multi-dimensional mapping table of efficiency, emission and cycle stability is established and used for online selection through injection start (SOI) scanning of single injection, checking of injection pulse width and injection end position by injection pressure and joint calibration of secondary injection end (SEOI) and secondary injection proportion (SIP) of double injection. According to the method, under the equivalent and rarefied working conditions, the optimal interval of SOI and the optimal interval of SEOI and SIP are given respectively; and a strategy elimination and rollback logic with a cyclic variation coefficient (COV) smaller than or equal to 3% as a threshold value is introduced, so that a parameter combination taking heat efficiency, NOx and combustion stability into account is obtained under different lambda and loads. The method is suitable for calibration and control of the hydrogen direct injection spark ignition engine.

This disclosure relates to an antioxidant composition, comprising: 1) C10 to C36 linear, branched or cyclic alcohol, 2) hindered phenolic antioxidant, 3) optionally molybdenum containing compound, and 4) optionally, diphenylamine compound, and the use thereof as antioxidant in lubricant compositions having good oxidation properties in internal combustion engine applications, especially in compression ignited engine and or spark ignited engine applications.

The invention discloses a method for controlling the influence of ammonia mixing on cyclic variation of a hydrogen spark ignition engine. The method comprises the steps of fuel mixing regulation and control, wherein the supply flow of ammonia gas and hydrogen is regulated according to a first preset control strategy; ignition advance angle optimization: adjusting the ignition advance angle of the spark plug according to a second preset control strategy; the fuel injection parameters are adjusted according to a third preset control strategy; air-fuel ratio switching control is conducted, specifically, the engine operation mode is adjusted according to a fourth preset control strategy; a mounted sensor is used for monitoring circulating combustion parameters in real time, when preset conditions are met, the electronic control unit selectively executes a first preset control strategy, a second preset control strategy, a third preset control strategy and a fourth preset control strategy, the ammonia gas supply proportion, the ignition advance angle and / or the gas inlet disturbance amplitude are adjusted, and the gas inlet disturbance amplitude is adjusted. And the engine returns to the stable combustion state again. According to the method for controlling the influence of ammonia mixing on the cyclic variation of the hydrogen spark ignition engine, fine control over the combustion process of the engine is achieved by regulating and controlling the mixing proportion of ammonia and hydrogen and combustion control parameters, the fluctuation of combustion indexes between cycles is reduced, the heat efficiency of the engine is improved, and the harmful emission and the knocking risk are restrained; therefore, the comprehensive performance of the hydrogen fuel engine is obviously improved.

This paper proposes a method to prevent or reduce low-speed premature ignition in engines lubricated with compound oil. [Solution] The method includes the step of lubricating the crankcase of an engine with a lubricating oil composition containing about 100 to about 3000 ppm of silicon derived from at least one silane-containing compound, based on the total weight of the lubricating oil composition.

The application discloses a cold starting device of a pure methanol manifold injection ignition engine for a ship, which comprises an injection unit and a mixed gas preheating unit. One end of an air inlet pipe is connected with an air inlet port of a cylinder cover through the injection unit, an intermediate connecting pipe, annular plates at two ends of the mixed gas preheating unit, the mixed gas preheating unit, an air inlet pipe of the cylinder cover and the air inlet port of the cylinder cover in sequence. The injection unit comprises an injection unit pipe, a methanol fuel atomization arc-shaped plate and MCH ceramic electric heating arc-shaped pieces. The outer surface of the methanol fuel atomization arc-shaped plate towards the axis of the injection unit pipe is provided with a plurality of atomization spherical pits with heads cut off in a matrix arrangement. The mixed gas preheating unit comprises a double-wall pipe, annular plates and a plurality of MCH ceramic electric heating rods. The injection unit of the application atomizes methanol fuel droplets through secondary atomization, significantly improves the atomization characteristics of the methanol fuel and the temperature of the mixed gas in the annular cavity, and further ensures the cold starting of the pure methanol fuel engine to be completed quickly and efficiently.

Method for controlling a spark-ignition engine running on gasoline and alcohol. The invention relates to a method for adjusting a gasoline and alcohol engine within a thermal protection zone close to full load, for which the fuel mixture is set to a target value strictly greater than 1. This target value is determined for each operating speed-load point within this zone as a function of the alcohol content (AB) to limit the exhaust temperature to a predetermined maximum value. Starting from the determination of a first AB value (AB), obtained with an uncertainty of plus or minus x percent, a corrected AB value (AB) is determined by subtracting x percent from the first AB value. The fuel mixture target is then set within the thermal protection zone to the value corresponding to the corrected AB for each point within the zone. (Short figure: Fig. 2)