10271 results about "Cylinder (engine)" patented technology

A system for an engine, comprising a cylinder, a first injection subsystem for injecting a first substance into the cylinder, a second injection subsystem for injecting a second substance into the cylinder, and an electronic engine controller configured to control a plurality of operating parameters of the engine, where the electronic engine controller is configured to cause variation of at least one of the operating parameters in response to a shortfall condition of the second injection subsystem.

A system and method are described for reducing engine vibration during cylinder deactivation in selected operating conditions. The method utilizes open valve deactivation to better match the cylinder pressure of deactivated cylinders to combusting cylinders. This mode is utilized, along with cylinder closed valve cylinder deactivation, to improve overall fuel economy, while at the same time reducing vibration felt by the vehicle driver.

Methods, devices and systems for power generation through liquid piston internal combustion engine. The liquid piston internal combustion engine of the invention, utilizes a novel, synergetic combination of internal combustion and steam piston engines within the framework of one and the same system. The engine may comprise or a plurality of cylinders, each having a liquid piston. The ICE (Internal Combustion Engine) system comprises six modules viz PGM (Power Generating Module) (100), ERS (Energy Recovery System) (200), PCM (Power Conversion Module) (300), HAS (Hydraulic Shock Absorbers Module) (400), DAC (Data Acquisition & Control Module) (500) and AEM (Auxiliary Equipment Module) (600).

The fuel injection device provides a particularly effective sound-decoupling construction. The fuel injection device has at least one fuel injection valve, a receptacle bore for the fuel injection valve in a cylinder head, and a fuel distributor line having a fitting in which the fuel injection valve is placed in partially overlapping fashion. A connecting element is situated in the receptacle bore such that the fuel injection valve is held in the connecting element such that the fuel injection valve and the connecting element are held so that they do not contact any surfaces or walls of the receptacle bore of the cylinder head that do not run axially parallel to the fuel injection valve. For this purpose, the connecting element is attached immediately on the fitting of the fuel distributor line.

The fuel injection valve is particularly well-suited for use in fuel injection systems of mixture-compressing externally ignited internal combustion engines.

This invention overcomes the disadvantages of the prior art by providing a power generating system particularly suitable for field use in remote locations, which is fuel-efficient, relatively quiet, tolerant of dust, capable of operating on low grade logistics and diesel-like fuels and capable of generating between 500 W and 2 KW of continuous electrical power. This generator employs a miniature internal combustion engine/generator (MICE) having a piston moving within a cylinder arranged for two-cycle operation, and an interconnected, axially arranged piston shaft that oscillates an alternator coil within a magnetic core. The piston shaft is opposed by a strong, multiple-helix spring. The cylinder head, in which the piston operates, is cooled by moving (electrically pumped) fluid in a cooling head, or by another heat-transfer mechanism. The MICE generator's intake arrangement includes a preheater heated by a heated fluid flow thereon. The MICE generator is vibration-isolated using a base that supports the MICE on a plurality of soft coil springs. The MICE generator is encased in an acoustic enclosure having a shell composed of sheet metal or another stiff material extending from the base plate and being covered by a top side. Holes in the enclosure top are covered by porous discs that allow exhaust gasses from the internal muffler to pass therethrough. The acoustic enclosure resides in a large, typically portable, external package enclosure.

By employing command value signals for controlling the opening timing of an exhaust valve or an intake valve and means for measuring flow rates of an intake air of a flow direction which flows through an intake manifold of an internal combustion engine, an air flow rate corresponding to the command value signal is measured. A valve mechanism includes the intake valve and the exhaust valve for each cylinder of the internal combustion engine and is controlled by a valve control means for controlling the valve mechanism. A failure diagnosis of an operating status of the valve mechanism can be performed.

An exhaust manifold made of plate metal in which sufficient strength and rigidity can be ensured, lightening of the weight is intended by making walls thin as a whole, and early activation of a catalyst is easy. The exhaust manifold is one for a multi-cylinder internal combustion engine having two groups of cylinders selected so that exhaust strokes are not successive. The exhaust manifold includes two exhaust pipe sections containing exhaust pipes communicating with the cylinders of one of the groups respectively, confluence sections where the exhaust pipes in each of the exhaust pipe sections join respectively, and a gathering section where the confluence sections join. Further, the exhaust manifold is constructed by an obverse half body, a partition body and a reverse half body made of plate metals and laid face to face with each other, the exhaust pipe sections and the confluence sections are formed by the partition body and one of the obverse and reverse half bodies, and the gathering section is formed by the obverse half body and the reverse half body.

An in-cylinder direct-injection spark-ignition engine using at least a homogeneous combustion mode and a stratified combustion mode and equipped with a pentroof combustion chamber head having first and second shallow-angled surfaces, comprises intake valves disposed in the first shallow-angled surface, exhaust valves disposed in the second shallow-angled surface. A pair of substantially straight intake ports are formed in the cylinder head. A tumble-and-swirl control valve is disposed in a first intake port of the substantially straight intake ports for adjusting the amount of intake air passing through the first intake port. A piston crown comprises an intake-valve side inclined surface generally parallel to the first shallow-angled surface, an exhaust-valve side inclined surface generally parallel to the second shallow-angled surface, and a piston bowl having an opening of a substantially complete round and arranged in an eccentric position with respect to the outside circle of the upper portion of the piston toward the intake valves. The piston bowl has a deeply-recessed bowl cavity. The deeply-recessed bowl cavity is arranged eccentrically to the opening of the piston bowl toward a second intake port of the substantially straight intake ports.

The present invention discloses an air-intake alcohol-spraying device of desel engine and its spray control method. Said device is mainly formed from nozzle mounted in the air inlet tube of engine ornozzle mounted in the inlet channel of every cylinder, electric control unit for driving nozzle to open or close it and various sensors of engine load, rotating speed, cam shaft position and cooling water temp. for transferring information to electric control unit. Said invention can substituted diesel oil by partial alcohol fuel, so that the carbon smoke discharge can be reduced by 40%, at the same time the discharge of NOx also can be reduced by above 30%.

A method is disclosed for controlling operation of an engine coupled to an exhaust treatment catalyst. Under predetermined conditions, the method operates an engine with a first group of cylinders combusting a lean air/fuel mixture and a second group of cylinders pumping air only (i.e., without fuel injection). In addition, the engine control method also provides the following features in combination with the above-described split air/lean mode: idle speed control, sensor diagnostics, air/fuel ratio control, adaptive learning, fuel vapor purging, catalyst temperature estimation, default operation, and exhaust gas and emission control device temperature control. In addition, the engine control method also changes to combusting in all cylinders under preselected operating conditions such as fuel vapor purging, manifold vacuum control, and purging of stored oxidants in an emission control device.

A method for diagnosing an operational state of a variable valve lift (VVL) device in an engine, wherein the VVL device is capable of operating in two modes of operation. The method includes measuring a rotational speed of an engine crankshaft while the engine is running or cranking, correlating the measured crankshaft speed with an estimated engine cylinder pressure or torque, comparing the estimated engine cylinder pressure or torque with an expected range of engine cylinder pressure or torque values for the two modes of operation for the VVL device, determining if the estimated engine cylinder pressure or torque falls within the expected range of engine cylinder pressure or torque values, and activating an alert if the estimated engine cylinder pressure or torque falls outside the expected range of engine cylinder pressure or torque values to provide notification that the VVL device is operating in an improper mode of operation.

A two-stroke internal combustion engine is disclosed having opposed cylinders, each cylinder having a pair of opposed pistons, with all the pistons connected to a common central crankshaft. The inboard pistons of each cylinder are connected to the crankshaft with pushrods and the outboard pistons are connected to the crankshaft with pullrods. Each opposed cylinder further comprises an integrated scavenge pump for providing positive intake pressure. This configuration results in a compact engine with a very low profile, in which the free mass forces can be substantially balanced. The engine configuration also allows for asymmetrical timing of the intake and exhaust ports through angular positioning of the journals on the crankshaft.

This invention relates to screw stake, making screw stake equipment and the making method. The making screw stake equipment is mainly composed of the engine body, the oil cylinder, the hydraulic electric engine, the automation equipment and the transfer piping. The power head is installed on the engine body base's stand support. The hydraulic electric engine is installed on the engine body's base. The hydraulic electric engine connects with the power head through the power head. The drill pipe's clamp apparatus connects with the power's removable clamp apparatus. The transfer piping connects with the inner drill pipe. The automation equipment separately connects with the hydraulic electric engine and the oil cylinder. This invention has the following advantages: the power output saves electricity and time, it enlarges the equipment's application range and the construction speed excels other similar inventions evidently; the equipment adopts the extensible drill pipe, the drill's drilling depth largely improves; the three independent drill heads' structure has the unique ability of thrice enlarging aperture; it realizes the revolution and the raising to keep synchronous and non- synchronous; it adopts low gravity center pile frame, the equipment's weight is reduced evidently, the safety improves; it realizes the stake's stirring and evidently improves the stake's uniformity

The invention relates to a high efficiency heat engine having combined heat-work conversion process, especially an heat engine integrated with multiple working strokes and multiple working media. The invention has duplex combined type cylinder structure, wherein a first cylinder is a one-time combustion/expansion cylinder, and a second cylinder is a secondary combustion/expansion cylinder. The multiple working strokes driven by the multiple working media are integrated into a whole. These different working media comprise air-fuel burnt products, steam, and compression air under the brake energy regenerating mode of air mixing type. The duplex combined type cylinder structure provides places for the composite expansion of three different working media, and can capture the energy lost in the working media emission and braking process. The structure causes the heat engine of the invention can work in six work periods composed of twelve strokes. In the six work periods, four periods comprises four different working strokes, but only one working stroke consumes fuel. Therefore, the fuel conversion efficiency can be greatly improved, and is even two times of the conventional internal combustion engine (ICE).

An engine ECU executes a program including the step of detecting an engine coolant temperature (THW), the step of selecting a map for a warm state as the map for calculating a fuel injection ratio (or a DI ratio) r when the engine coolant temperature (THW) is equal to or higher than a temperature threshold value (THW(TH)) (YES in S110), the step of selecting a map for a cold state as the map for calculating the fuel injection ratio (or the DI ratio) r when the engine coolant temperature (THW) is lower than the temperature threshold value (THW(TH)) (NO in S110), and the step of calculating the fuel injection ratio between the in-cylinder injector and the intake manifold injector (or the DI ratio) r based on the engine speed, load factor, and the selected map.

A directly actuated injection valve comprises a hollow valve housing, a valve member disposed within the hollow interior, a biasing mechanism, an actuator assembly and a hydraulic link assembly. The valve member is movable between a closed position and an open position for governing the flow of fuel into the combustion chamber of an internal combustion engine. The biasing mechanism, preferably a spring, biases the valve member in the closed position. The actuator assembly generates an opening force that acts against the valve spring to open the valve. The hydraulic link assembly is interposed between the valve member and the valve spring and the actuator assembly. The hydraulic link assembly transmits respective closing and opening forces to the valve member. The hydraulic link preferably comprises a piston disposed within a cylinder that is filled with a hydraulic fluid. The opening and closing forces are transmitted through a thickness of the hydraulic fluid that is trapped between the planar surfaces of the piston and the head and base of the hydraulic cylinder.

The invention provides a double-nozzle gas/liquid dual-fuel in-cylinder direct injection internal combustion engine and a control method, and belongs to the field of internal combustion engine control. According to the system, on the basis of still using an ignition type internal combustion engine body, a double-nozzle gas/liquid dual-fuel ignition type internal combustion engine in-cylinder direct injection device and a fuel injection and ignition electronic control unit are additionally arranged, and the double-nozzle gas/liquid dual-fuel ignition type internal combustion engine in-cylinder direct injection device comprises a gas fuel flow sensor, a gas fuel control valve, a gas fuel pressure stabilizer, a liquid fuel flow sensor, a liquid fuel control valve and the like. The fuel injection and ignition electronic control unit adjusts injection time and injection pulse width of a gas fuel nozzle and a liquid fuel nozzle, and therefore in-cylinder injection of gas/liquid dual fuels in any ratio is achieved; the injection mass ratio of the gas/liquid dual fuels is adjusted in real time according to working conditions, and therefore the starting speed and accelerating response speed of the internal combustion engine are increased, and fuel consumption and pollutant emission are reduced; and the heat dissipation and lubrication problems caused by long-time use of the internal combustion engine are relieved by decreasing the using frequency of the gas-fuel high pressure nozzle.

The invention discloses an electrically-aided turbocharging system, and belongs to the technical field of turbocharging. The invention aims at providing an optimized electrically-aided turbocharging system adequately utilizing a turbine body structure, and a control method thereof. One end of the electrically-aided turbocharger disclosed by the invention is installed at an inlet end of an intake channel, and the other end of the electrically-aided turbocharger is installed at an outlet end of an exhaust channel; the electrically-aided turbocharger is composed of an aiding high-speed motor, a compressor, a turbocharger rotary shaft, a turbine and a waste gas bypass valve device; an intercooler is installed on the intake channel; an intake branch pipe is connected to a tail end of the intake channel; an exhaust branch pipe is connected to an inlet end of the exhaust channel; a gasoline engine cylinder is directly connected between the intake branch pipe and the exhaust branch pipe; the exhaust channel behind the exhaust branch pipe is divided into a first passage and a second passage which are connected in parallel; and tail ends of the first passage and the second passage both communicate with an outlet pipeline. According to the electrically-aided turbocharging system disclosed by the invention, the high-speed motor is combined with the turbocharger with the waste gas bypass valve, thus the influence of waste gas turbocharging for the performance of a gasoline engine is furthest utilized.

The present invention relates to a method of scavenging residual burnt gas of a direct-injection internal-combustion engine, notably of diesel type, comprising at least one cylinder (10) including a combustion chamber (12), at least one exhaust means (14) with an exhaust valve (18) controlled by exhaust control means (42), at least one intake means (24) with an intake valve (28) controlled by intake control means (40) and a processing unit (44) receiving the values relative to the intake pressure (Pa) and to the exhaust pressure (Pe) of the engine.

According to the invention, the method consists, when the engine runs under low speed and high load conditions, in:

• • carrying out a sequence of opening/closing of exhaust valves (18) during the exhaust phase of the engine,
  • during this exhaust valve opening/closing sequence, in carrying out at least one sequence of opening/closing of intake valves (28) so as to achieve scavenging of the residual burnt gas.

In a V-type six-cylinder engine, turbo-superchargers are provided for compressing intake air and feeding the compressed air into combustion chambers, and an ECU is operable to switch the combustion mode from a non-supercharged stoichiometric combustion mode to a supercharged lean combustion mode, depending on the engine operating conditions. When switching from the non-supercharged stoichiometric combustion mode to the supercharged lean combustion mode, the ECU retards the ignition timing, and keeps the retard amount of the ignition timing at a constant value if the increasing actual boost pressure becomes equal to or higher than a pre-set target boost pressure.