Abstract:
Nockenwellentrieb (1), insbesondere für eine Dieseleinspritzpumpe, mit einer um eine Nockenwellenlängsachse (2) rotierenden Nockenwelle (3), wobei diese wenigstens eine Nocke (4) umfasst, die mit einer hubbeweglich geführten Druckrolle (5) zusammenwirkt, welche auf der Umfangsfläche der Nocke (4) abwälzt, wobei die Hubbewegung der Druckrolle (5) einen Arbeitshub umfasst, in welchem sich diese von der Nockenwellenlängsachse (2) wegbewegt, und ferner einen Rückhub umfasst, in welchem sich diese zur Nockenwellenlängsachse (2) hinbewegt, wobei die Umfangsfläche der Nocke (4) einen Rückhubabschnitt (6) aufweist, auf welchem die Druckrolle (5) im Rückhub abwälzt und ferner einen Arbeitshubabschnitt (7) aufweist, auf welchem die Druckrolle (5) im Arbeitshub abwälzt, wobei die Umfangsfläche über dem Rückhubabschnitt (6) der Nocke (4) einen größeren Reibwert als über dem Arbeitshubabschnitt (7) aufweist. Somit wird ein Nockenwellentrieb (1) für eine Dieseleinspritzpumpe geschaffen, welcher ein Abwälzen der Druckrolle (5) über dem Umfang der Nocke (4) über dem gesamten Drehzahlbereich der Nockenwelle (3) sicherstellt.
Abstract:
The present invention relates to an internal combustion engine of piston type operating with a mixture of combustible fuel and air comprising at least one combustion chamber (11) and a piston (2) movably arranged in said combustion chamber (11) to compress the fuel and air mixture so as to provide a maximum compression ratio in the range of 15:1 to 25:1 ; an inlet (4) arranged in said combustion chamber for receiving an amount of said mixture of fuel and air into said combustion chamber (11); and an igniting device (3) arranged in said combustion chamber (11) for igniting said mixture of fuel and air received in said combustion chamber (11) at a crank shaft (9) angle position in the range of 0 degrees to 15 degrees after a top dead center (ATDC) of said piston in said combustion chamber (11); wherein the combustion chamber and piston is arranged to reduce the risk of hot spots and the engine is configured to have a burn rate where 90% of the fuel is burnt in a crank angle position range of between 15° to 40°. The invention also relates to a method or combustion, a vehicle, ship or power plant comprising the combustion engine according to the present invention.
Abstract:
A four stroke internal combustion engine having a flexible arrangement is disclosed such that the engine can be easily configured for supercharged or normally aspirated operation. The engine includes a cooling system that includes both closed loop and open loop cooling systems for improved cooling efficiency. A power take off housing located on one end of the crankcase. Various engine components are operatively coupled to the crankshaft within the power take off housing including a cam shaft for a valve actuation assembly, a generator, an engine starting mechanism, a balance shaft, and a supercharger. The engine contemplated in accordance with the present invention also includes a dry sump lubrication system having lubricant separator for separating lubricant from blow-by gas within the engine.
Abstract:
This ICE combines the advantages of a four-stroke engine and the power output of a two-stroke and air engines. The air charged from the high pressure receiver (1) is charged the engine through the electric valve (4) independently of the fuel and enables, due to a great difference in pressures, fast performance of the process eliminate intake and compression strokes which results in a two-stroke cycle operation. Depending on the degree of air reduction, the mode of operation of atmospheric or turbocharged engine can be achieved. Replacing of the mechanical exhaust valve (6) with the electric valve (7a, 7b) enables switching from two-stroke to four stroke mode of operation and vice versa only by the computer 2 instruction. Location of the fuel nozzle (5) directly in the compression chamber and its operation independently from the electric air valve (4) enable use of the petrol, gas and oil.
Abstract:
A novel and improved engine and method are provided which includes a premixed charge compression ignition engine (10) capable of operating over a wide load range without the need to vary the IMT beyond easily achievable or desirable temperature levels. The engine (10) and method adjust the start of combustion by adjusting the engine speed and torque while delivering a targeted engine horsepower output.
Abstract:
A method and internal combustion engine (10) operable in a premixed charge compression ignition mode, comprising a combustion chamber (16), an intake system (18) for delivering air intake, a mixing device that mixes a first fuel (23) with the intake air to provide a premixed charge of air and the first fuel (23), a direct fuel injector (26) adapted to directly inject a second fuel (27) into the combustion chamber (16), and a control system (30) adapted to control the direct fuel injector (26) in a manner to provide a post-ignition injection where the second fuel (27) is directly injected into the combustion chamber (16) after onset of ignition of the premixed charge in the combustion chamber (16). The second fuel (27) is preferably injected into the combustion chamber (16) during combustion of the premixed charge and/or shortly after combustion of the premixed charge in the combustion chamber (16).
Abstract:
A spark-ignition rotary internal-combustion engine, having a plurality of pistons (7) which perform a reciprocating motion inside cylinders (6) arranged so as to be equally angularly spaced on a same circumference, the cylinders (6) being formed in a rotating body or rotor (2) which rotates coaxially inside a fixed body or stator (1), in which the inlet duct (9) for the air-fuel mix, the burnt gas exhaust duct (8) and the spark-plug recess (10) are provided.
Abstract:
A catalytically active surface is provided on the clean, combustion-exposed parts of an internal combustion engine that is green, has low operating hours, or is of modern, low emission design. A substrate or thermal barrier coat of high surface area and preferably capable of maintaining a surface temperature of at least 450 DEG C is deposited in the combustion chamber. Zirconia, silica, or lube oil ash are suitable. A catalytically active moiety such as platinum or iron is dispersed in, on, or with the combustion facing surface of the substrate. Nanophase iron from ferrocene or nanophase platinum are suitable. Catalytic action is maintained by continuously providing a low level of catalytic precursor to the engine in the combustion charge.
Abstract:
A plasma assisted reactor for the processing of a gaseous medium, including a bed of active material including titania or titania and zirconia, the majority of the titania comprising textured rutile or anatase phase or a mixture of textured rutile and anatase phases.
Abstract:
The invention relates to a method for operating a piston internal combustion engine in which the required fuel quantity for the respective combustion cycle is measured by a motor control (5) according to the load requirement and is directly injected into each individual cylinder (I, II) by means of an injection nozzle (7). After additional injection of the fuel quantity via the injection nozzle, said fuel quantity being measured for the combustion cycle, an additional fuel quantity is injected after completion of the combustion phase when the piston is respectively located in the area of the low dead center position during the expansion stroke thereof. According to the invention, the exhaust exiting the cylinders is guided through at least one mechanical, chemical and/or catalytic operative exhaust treatment device (10, 11) for removing pollutant parts.