The present disclosure is directed to integrated injector/igniters providing efficient injection, ignition, and complete combustion of various types of fuels. One example of such an injectors/igniter can include a body having a base portion opposite a nozzle portion, and a fuel passageway extending from the base portion to the nozzle portion. A force generator and a first valve are carried by the base portion. The first valve is movable in response to actuation from the force generator to move between closed and open positions. The injector/igniter also includes a second valve at the nozzle portion that is deformable in response to pressure in the fuel passageway to deform between a closed position and an open position.

Integrated fuel injectors and igniters and associated methods of use and manufacture

A system for safe storage and efficient utilization of a variety of fuel selections that range in composition and phase from cryogenic mixtures of solids and liquids to elevated temperature gases is provided for unique applications with various types of heat engines and fuel cells including hybridized combinations.

Multifuel storage, metering and ignition system

The present disclosure is directed to various embodiments of systems and methods for reducing the production of harmful emissions in combustion engines. One method includes correlating combustion chamber temperature to acceleration of a power train component, such as a crankshaft. Once the relationship between acceleration/deceleration of the component and combustion temperature are known, an engine control module can be configured to adjust combustion parameters to reduce combustion temperature when acceleration data indicates peak combustion temperature is approaching a harmful level, such as a level conducive to the formation of undesirable oxides of nitrogen. Various embodiments of the methods and systems disclosed herein can employ injectors with integrated igniters providing efficient injection, ignition, and complete combustion of various types of fuels.

Methods and systems for reducing the formation of oxides of nitrogen during combustion in engines

The present disclosure is directed to integrated injector/igniters providing efficient injection, ignition, and complete combustion of various types of fuels. One example of such an injectors/igniter can include a body having a base portion opposite a nozzle portion. The base portion receives the fuel into the body and the nozzle portion can be positioned adjacent to the combustion chamber. The injector further includes a valve carried by the nozzle portion that is movable between a closed position and an open position to inject the fuel into the combustion chamber. An actuator is coupled the valve and extends longitudinally through the body towards the base portion, and a driver is carried by the body and is movable between a first position and a second position. In the first position the driver does not move the actuator and in the second position the driver moves the actuator to move the valve to the open position.

Fuel injector actuator assemblies and associated methods of use and manufacture

An improved high energy high efficiency hybrid capacitive/inductive ignition system with one or coils Ti for internal combustion engines employing one or more energy storage capacitor means (4) shunted by diode means (9), with high leakage inductor means (3a) of coils Ti with which have their primary (1a) and secondary (1b) windings wound side-by-side on a single segmented bobbin 72, unidirectional switches Si for each coil Ti which are preferably IGBTs, and high efficiency shunt diode/switch means SDi for each coil Ti shunting the primary winding of each coil Ti, so that, following production of an initial quarter cycle capacitive spark with peak current in the 0.2 to 3 amp arc discharge range, there is a decaying inductive unidirectional flow-resistant spark flowing through shunt switch means SDi.

Hybrid ignition with stress-balanced coils

A combustion chamber configuration and porting arrangement for a two-cycle crankcase compression diesel engine that improves scavenging. An exhaust port opens into one side of the engine cylinder bore and the scavenge ports and a precombustion chamber are configured so that they discharge their gases in an area diametrically opposed to the exhaust port for improving scavenging.

Combustion chamber importing system for two-cycle diesel engine

PURPOSE: To vary a compression ratio and give an optimum combustion condition depending upon an operation condition by covering the upper portion of a cylinder with a cylinder head having a fuel injection valve and making variable selectively the height of the upper end of an exhaust port on the cylinder. CONSTITUTION: A cylinder proper 5 has an air intake port 25 and an exhaust port 21 and a cylinder head 8 having a fuel injection valve 19 is fixed to the upper portion of the cylinder proper 5, thereby constituting a two-cycle diesel engine. A valve 33 is provided on the exhaust port 21 and projected when the engine is running at a low load. The effective compression stroke of a piston at a low load, therefore, becomes 'B', thereby enlarging a compression ratio and raising a combustion temperature level. At a high load, the valve 33 opens and the effective compression stroke of the piston becomes 'A', thereby reducing the compression ratio and preventing an excessive combustion temperature rise. COPYRIGHT: (C)1988,JPO&Japio

Tatsuyuki Masuda

Papers

Combustion chamber importing system for two-cycle diesel engine

Two-cycle diesel engine