476 results about "Controlled combustion engine" patented technology

A variety of methods and arrangements for improving the fuel efficiency of internal combustion engines are described. Generally, selected combustion events are skipped during operation of the internal combustion engine so that other working cycles can operate at a better thermodynamic efficiency. In one aspect of the invention, an engine is controlled to operate in a variable displacement mode. In the variable displacement mode, fuel is not delivered to the working chambers (e.g. cylinders) during selected “skipped” working cycles. During active (“non-skipped”) working cycles, a maximum (e.g., unthrottled) amount of air and an optimized amount of fuel is delivered to the relevant working chambers so that the fired working chambers can operate at efficiencies closer to their optimal efficiency. A controller is used to dynamically determine the chamber firings required to provide the engine torque based on the engine's current operational state and conditions. The chamber firings may be sequenced in real time or in near real time in a manner that helps reduce undesirable vibrations of the engine.

An apparatus for producing sounds corresponding to the operation of an internal combustion engine in the interior space of a motor vehicle is characterized by a pressure sensor (20) that detects fluctuations in pressure in a fresh air stream into the engine, an amplification device (32, 33) for amplifying output signals of the pressure sensor, and at least one speaker (34) attached to the amplifier and arranged in the interior space of the vehicle for reproducing the amplified signals.

The present invention provides a method and apparatus for chemically heating one or more components of, or intake air flowing to, an internal combustion engine by feeding hydrogen to a catalyst. In accordance with the invention, condensation of fuels on cold engine cylinder walls during and after cold start-ups is prevented, thereby reducing wear on the engine. The invention also provides a method and apparatus for reducing pollutants commonly occurring during cold start-up of combustion engines by heating components of, or intake air flowing to, a combustion engine, in order to quickly warm the engine and its catalytic converter to operating temperatures.

A method for optimizing fuel consumption in a machine powered by an internal combustion engine includes providing a fuel economy map associated at least in part with the internal combustion engine, the fuel economy map defining a fuel economy at a plurality of operating points of the internal combustion engine; determining a reserve need associated with the machine; determining an available reserve of the internal combustion engine for the plurality of operating points; identifying each operating point of the plurality of operating points having an acceptable reserve, the acceptable reserve being the available reserve that satisfies the reserve need; evaluating the fuel economy for the each operating point; and defining an output value for the each operating point based on the fuel economy and the acceptable reserve.

An oil mist separator (100) for an internal combustion engine that separates an oil component in a gas, which is introduced from a crankcase of the internal combustion engine, from the gas, includes a porous filter (150) that separates, from the gas, the oil component in the gas, the porous filter (150) being provided in a passage, through which the gas passes, and being coated with a counteragent for neutralizing an acid substance.

The invention relates to the technical field of energy conservation and environmental protection, in particular to an internal combustion engine and a vehicle. The internal combustion engine comprises an internal combustion engine body, a pipe body assembly, an oxyhydrogen generating device and a water supply system; the internal combustion engine body is provided with an exhaust system and an air intake system; the exhaust system comprises an exhaust branch and an exhaust pipeline connected with each other; the exhaust branch is connected with the external part; the pipe body assembly comprises a first pipe body part and a second pipe body part; the first pipe body part is connected with the water supply system; the second pipe body part is connected with the exhaust branch in a winding manner in the length direction of the exhaust branch to be used for having thermal transmission with the exhaust branch; one end of the oxyhydrogen generating device is connected with the second pipe body part; and the other end of the oxyhydrogen generating device is connected with the air intake system. The internal combustion engine alleviates the technical problem that the existing internal combustion engine adopts petroleum for combustion to pollute the environment, generate haze and seriously consume the petroleum resources.

An internal combustion engine is started by performing fuel supply into part of a plurality of cylinders included in the internal combustion engine. After the magnitude of the negative pressure produced in intake piping of the internal combustion engine exceeds a predetermined reference value, fuel supply into the remaining cylinder(s) is started.

A roller tappet intended for use a) in a high pressure fuel pump; b) in a valve train of an internal combustion engine; c) in an engine such as an axial piston engine or a radial piston engine; or d) generally for a pump/compressor of an axial piston type or of a radial piston type.

Apparatuses, systems and methods for utilizing crankcase compression air to effect forced air induction (i.e. “boost”) into the combustion chamber of an internal combustion engine is provided. In some embodiments, the apparatuses are a supercharger apparatus that is attached to an existing engine. In other embodiments, the supercharger components are located within the structure of a novel engine itself. An embodiment of the apparatus includes a conduit that includes three inlets: 1) an inlet that is capable of being placed in fluidic communication with the crankcase chamber of an engine; 2) an inlet that is capable of being placed in fluidic communication with an intake to a combustion chamber of the engine; and 3) an inlet in fluidic communication with the atmosphere.

A method and a device are described for starting an internal combustion engine of a hybrid drive train, having an internal combustion engine and at least one additional machine, in particular an electric machine, a separating clutch, which is situated between the internal combustion engine and the additional machine, and a crankshaft angle sensor for detecting the instantaneous crankshaft angle of the internal combustion engine being provided. Arrangements are provided to perform the following operations to start the internal combustion engine when a high-voltage battery is essentially discharged, including a) the separating clutch is or has already been disengaged, b) the additional machine is accelerated, c) after conclusion of the acceleration operation of the additional machine, the separating clutch is engaged, so that the internal combustion engine is also accelerated, d) as soon as the crankshaft angle sensor system supplies a favorable crankshaft angle, the internal combustion engine is started by direct start.

An engine configuration that places multiple pistons on one or two oscillating discs. The engine can be configured to operate as an internal combustion engine that uses diesel fuel, gasoline, or natural gas, or it can be configured as an expander to convert high pressure high temperature gas to rotary power. For any given set of choices of numbers of pistons and sizes of pistons, disks, and gears, there are disclosed dimensional constraints useful for more efficient functioning of the engine. This engine is especially suited as a driver for electrical power generation as it delivers high torque at low engine speeds, among other uses. Its compact design results in high power to weight ratios.

In a method for controlling combustion in an internal combustion engine with at least one cylinder (30), knock intensity in the cylinder (30) by means of a knock sensor (37) is detected. A predetermined setpoint ignition angle of the cylinder (30) corresponding to a target exhaust gas temperature is adjusted, and a fluid admixture in the cylinder (30) is controlled in dependence on the detected knock intensity.

In an exhaust gas turbocharger system for charging an engine including a compressor arrangement at a charging fluid side LL and a turbine arrangement at an exhaust gas side AG, a further compressor which is driven by a separate controllable drive and whose primary side is connected to the charging fluid side LL while its secondary side is connected to the exhaust gas side is provided for compressing charge air taken from the charging fluid side and supply it to the exhaust gas side for assisting driving the exhaust gas turbines so as to maintain them at relatively high speeds in transition periods including engine idling.

An internal combustion engine is provided. The internal combustion engine includes an engine cylinder, a piston, a cylinder head, a combustion chamber, and a fuel injector. The cylinder head has a depression of predefined shape such that an effective width of the depression of cylinder head is greater than a diameter of the engine cylinder. The combustion chamber is defined as an enclosure between the depression of the cylinder head and a crown of the piston. The fuel injector is adapted to supply fuel to the combustion chamber via a number of orifices. In an alternate embodiment, the combustion chamber is provided with a number of ducts adapted to provide a passage to the fuel exiting from the orifices. The ducts extend at a predefined angle with an axis of the engine cylinder to facilitate injection of the fuel towards the depression of the cylinder head within the combustion chamber.

Systems and methods for production of fuel for an internal combustion engine are described herein. Systems may include a plasma reformer and an internal combustion engine. The plasma reformer may produce a gas stream from the liquid feed. The gas stream may include molecular hydrogen and carbon oxides. At least a portion of the gas stream may be provided to the internal combustion engine.

A method for determining cylinder-specific combustion features of an internal combustion engine, the cylinder-specific combustion features being ascertained from a variable which represents the crankshaft speed, especially being ascertained from a signal of a crankshaft sensor or camshaft sensor. The cylinder-specific combustion features include a combustion position of at least one cylinder and/or a torque of the crankshaft.

The invention relates to an internal combustion engine and a valve drive unit thereof. The internal combustion engine comprises a plurality of cylinders. At least one cam shaft is rotatably supported in order to operate ventilating valves of the cylinders of a cylinder set, and one sliding cam allowing axial sliding is arranged on the cam shaft corresponding to each cylinder. A common actuator (7) is provided for all the sliding cams (2a, 2b, 2c) so that the sliding cams (2a, 2b, 2c) supported on the cam shaft (1) in an axially slidable manner can slide axially.

Apparatus and method for detecting the direction of rotation of an internal combustion engine using a magnet wheel which moves past an electrical ignition coil. For each revolution, at least one current or voltage pulse is induced in the coil having a polarity dependent on the direction of rotation. The magnet poles and the coil have geometric relationships that, upon each magnet wheel revolution, the curve form of the current or voltage pulse has at least two prespecified extreme points with a curve characteristic which is substantially neither rising nor falling and at least one break point with a discontinuity. A direction of rotation signal is derived from these curve characteristics.

The invention relates to the field of power machinery, in particular to an internal combustion engine with rotor pistons. The internal combustion engine is characterized in that 1, the two pistons which are mounted oppositely intermittently rotate around a center shaft in a cylindrical cylinder, air suction, compression, explosion and exhaust stoke are completed, energy of exploded gas acts on side surfaces of the pistons, output shafts are directly pushed to rotate, and the problem of energy dissipation of an engine with a reciprocating piston due to change of an included angle between a crank and a connecting rod is avoided; 2, compared with an engine with a reciprocating piston and a triangular rotor, the internal combustion engine does not have a reciprocating part or a movable valve or components thereof, does not realize eccentric movement, accordingly does not cause structural vibration, and is low in self consumption; 3, compared with a triangular rotor engine adopting a linear sealing component, the engine realizes surface sealing, does not need parts such as sealing strips and the like which are difficult in processing and easy to be worn, and is fine in sealing performance and high in reliability; 4, abrasion rate is low, abrasion of a main portion only depends on the abrasion degree of a bearing; and 5, the total engine is simple and compact in structure and high in thermal efficiency.