Abstract: The present invention relates to a technology that can simultaneously control the flow rate of a coolant and perform variable separate cooling by controlling the opening rate of a flow control valve. The flow control valve has an inlet port connected to a coolant outlet of a cylinder block and a plurality of outlet ports connected to a cooling inlet port of an engine such that the opening rate of a first outlet port is symmetrically changed in a first direction and a second direction from a mid-operation angle of the entire operation section of the flow control valve.

Abstract: A valve arrangement for a cooling system of a vehicle includes a housing having at least two cooling-liquid ports, and a valve element, which can be adjusted between an open position in which it opens up a connection between the cooling-liquid ports and a closed position in which it separates the connection between the cooling-liquid ports. A drive is provided for adjusting the valve element between the open position and the closed position, wherein the drive includes an electric motor, which motor drives an actuation element which actuates the valve element, wherein the actuation element moves along a circular path section in the course of an adjustment of the valve element between the open position and the closed position.

Abstract: The present invention relates to a tribological system (1; 2) comprising a first body (102; 105) and a second body (101; 107), which each form a component of an internal combustion engine (100), in particular a piston (102), a piston ring (105) or a cylinder (101, 107), and the surfaces (112, 108, 113) of which have a first and a second material area (11, 12) which come into contact with each other at least in some regions during operation and form a tribological contact, wherein the first and/or the second material area (11, 12) is formed as a layer on the basis of chromium oxide or aluminum chromium oxide. The invention also relates to an internal combustion engine (100) having such a system (1; 2).

Abstract: It is widely appreciated that renewable sources of energy are desirable. In particular, in recent years the development of biodiesel has been encouraged in order to find a replacement for fossil fuels in internal combustion engines. Typically, such biodiesel is based on triacylglycerols of vegetable origin. Animal fat, due to its different chemical composition and production process presents additional challenges when attempted to be used as a source of fuel. Most known methods require extensive processing of naturally occurring fats in order for them to be usable in conventional engines. According to the present invention, there is provided a method of oxidizing organic fats within an internal combustion engine to generate power by applying a first electrical charge to an oxidizer (e.g. air) and applying a second electrical charge to the organic fat opposite in polarity to the first electrical charge.

Abstract: An oil pan for trapping oil of an engine comprising: a curved portion connecting a flat portion and a side wall portion and including a rib-free region where a first reinforcing rib provided on the flat portion and a second reinforcing rib provided on the side wall portion are not connected to each other.

Abstract: A cooling structure of a water-cooled engine includes: a plurality of cylinders 2 arranged in a cylinder block 1; and a water jacket W formed around the plurality of cylinders 2. The water jacket W includes a pair of main flow paths 7, 8 formed in a state of extending in a cylinder arrangement direction outside the cylinders, and inter-bore flow paths 9, 10 formed between adjacent cylinders 2 in a state of connecting the pair of main flow paths 7, 8. Guide walls 11h, 13h, capable of guiding the cooling water flowing in the main flow paths 7, 8 to the inter-bore flow paths 9, 10, are formed in the cylinder block 1.

Abstract: A system and method of providing HHO gas to an internal combustion engine in a vehicle involves providing a liquid electrolyte solution to at least one HHO generator including an HHO generating structure having a plurality of parallel plates suspended in a fluid compartment. Residual electrolyte solution is separated from the HHO gas output by the HHO generator, and a quantity of the HHO gas is stored in a pressure tank at a pressure level exceeding an ambient atmospheric pressure. The HHO gas is electively delivered to an intake side of the internal combustion engine by a valve structure coupled to the pressure tank, which is controlled at least in part by a throttle signal of the internal combustion engine.

Abstract: A uniflow engine includes a cylinder having a cylinder wall, a volume exterior to the cylinder, at least one channel extending between the cylinder wall and the volume, and a valve outside of the cylinder configured to open and close flow communication between the cylinder and the volume through the channel.

Abstract: A laser device includes a light source device including a semiconductor laser; and a laser cavity irradiated with light from the light source device and including a saturable absorber. A beam waist diameter r of the light that irradiates the laser cavity and an initial transmittance T0 of the saturable absorber satisfy a relationship of 7.75×T04?7.77×T03+3.13×T02+0.16×T0+0.74?r?2.62×T0+0.675.

Abstract: A method to operate a combustion machine having at least an internal combustion engine, a fresh gas line and a cooling system comprising an ambient heat exchanger. A compressor, which can especially be part of an exhaust gas turbocharger, is integrated into the fresh gas line, and an intercooler is integrated between the compressor and the internal combustion engine and also into the cooling system. In case of an increase in the load demand that is made of the operation of the internal combustion engine, the temperature of the coolant flowing in the cooling system and entering the intercooler is lowered. As a result, the cooling output of the intercooler is increased and consequently, the temperature of the fresh gas (charge air) entering the internal combustion engine is also lowered.

Abstract: Venting of gaseous fuel during operation and after shutdown of an internal combustion engine increases emissions. A vent handling apparatus for a gaseous fuel system of an internal combustion engine comprises an accumulator for storing gaseous fuel; a first valve selectively enabling fluid communication between the accumulator and one of a gaseous fuel communication passage and a gaseous fuel storage vessel, the gaseous fuel communication passage delivering gaseous fuel to the internal combustion engine for combustion; and an apparatus for selectively returning the gaseous fuel from the accumulator to the internal combustion engine for combustion.

Abstract: A method for controlling a forced induction engine includes: determining a first air pressure upstream of an air compressor, the air compressor supplying compressed air to the engine; determining a second air pressure downstream of the air compressor; determining a limit air flow rate to the engine corresponding to the surge limit of the air compressor based at least in part on the first and second air pressures; and controlling a throttle valve actuator to position the throttle valve at a position providing an air flow rate that is greater than or equal to the limit air flow rate. A vehicle power pack having a control unit implementing the method and a vehicle having the vehicle power pack are also disclosed.

Abstract: Methods and systems are provided for cooling a compressor in an engine. In one example, a compressor with a liquid coolant passage extending through a section of a housing of the compressor adjacent to a bypass passage, is provide. The bypass passage enable airflow to be directed around a portion of a compressor impeller.

Abstract: A ventilation blower wheel may have a hub and blades extending radially outwards from the hub between a blade root and a blade tip. Additionally, the blades of said blower wheel may have a backward/forward curvature as a result of a reversal in curvature along their span. Furthermore, said blades may have, between 20% and 80% along their span, at least one pitch variation, extending over a maximum span distance of 25%, of at least 2° more or less than a linear pitch over said span distance.

Abstract: A guiding surface expanding to the outer circumferential side from the upstream side toward the downstream side is formed on the support section, a guided surface expanding to the outer circumferential side from the upstream side toward the downstream side is formed at an end portion on the outer circumferential side of the shielding member, and the shielding member covers a gap between the disc and the turbine blade in the fitting section in a state in which the guided surface abuts against the guiding surface at least when the disc is rotationally driven.

Abstract: A component for a gas turbine engine includes a platform that has a radially inner side and a radially outer side. A root portion extends from the radially inner side of the platform. An airfoil extends from the radially outer side of the platform. The airfoil includes a pressure side that extends between a leading edge and a trailing edge. A suction side extends between the leading edge and the trailing edge. A ratio of leading edge radius to maximum thickness is between 0.40 (r/Tmax) and 0.45 (r/Tmax) and a ratio of leading edge radius to axial chord length is between 0.17 (r/bx) and 0.27 (r/bx).

Abstract: A microwave spark plug for injecting microwave energy into a combustion chamber of an engine including an elongated housing, including an elongated chamber forming a hollow conductor in an interior of the housing, and including a microwave window arranged at a first end of the chamber in the housing, wherein the microwave window closes the hollow conductor relative to the combustion chamber, wherein the hollow conductor includes a connection element for a high frequency feed conductor at a second end arranged opposite to the microwave window, wherein the connection element includes a high frequency inlet cross section geometry which differs from a high frequency outlet cross section geometry at the microwave window. The microwave sparkplug is configured to be threaded into typical boreholes for sparkplugs and facilitates safe injection of microwave energy into a combustion chamber of an internal combustion engine.

Abstract: A propeller fan that includes a hub body with a shaft coupling portion. The propeller fan also includes a plurality of hub blades extending spirally from the hub body. The propeller fan additionally includes a plurality of blades extending outward from the hub body and the hub blade to generate an airflow in an axial direction.

Abstract: The arrangement for controlling the flow of laden gases is arranged upstream of an oil separation system and is provided with a check valve, a bypass valve and a stationary segment. The check valve is at least partially movable so as to define a first passage for a forward first flow direction in the event of positive pressure, while the bypass valve is moved rearward by negative pressure so as to clear a second passage for a second, opposite, flow direction. The stationary segment forms a seating surface for the bypass valve. The bypass valve, urged against the seating surface by an elastic biasing member, forms a seat for the check valve. In the event of sufficient negative pressure, the two valves are moved rearward together despite the biasing member and work together to redirect and guide the flow along an escape path corresponding to the second passage.

Abstract: An engine assembly for a motor vehicle is provided. The assembly comprises a bearing housing portion configured to support a bearing for a crankshaft of the engine assembly, wherein the bearing housing portion comprises a bearing interface surface configured to interface with the bearing and an end face adjacent to the bearing interface surface, the end face being arranged so as to face a web of the crankshaft when installed. The engine assembly further comprises an insulation layer provided on the end face, the insulation layer being positioned such that the insulation layer is between the bearing housing portion and the web of the crankshaft when the crankshaft is installed in the engine assembly.