59results about How to "Very high cooling effect" patented technology

Methods and systems are provided for improving fuel usage while addressing knock by adjusting the use of spark retard and direct injection of a knock control fluid based on engine operating conditions and the composition of the injected fluid. One or more engine parameters, such as EGR, VCT, boost, throttle position, and CMCV, are coordinated with the direct injection to reduce torque and EGR transients.

Provided is an electric motorcycle including a traveling motor, and a power supply circuit of an inverter and the like, in which a non-conducting cooling oil is supplied to be brought into direct contact with at least one of an electromagnetic coil of the traveling motor and a circuit board of the inverter. A radiator is disposed outside cases of a power plant and a power control controller so as to allow a traveling wind to pass by. Cooling oil is circulated between the radiator and a case of at least one of the power plant and power control controller. A cooling structure for an electric motor and the like that can obtain a higher cooling efficiency than a conventional art while having a simple structure which hardly causes increases in size, weight, cost, and the like can be provided.

The present invention relates to a cooling system for an engine inside a power generator, in the field of the power generator, which mainly includes a cool air suction hood, an engine housing side cover, an engine housing, a cool air cooling fan, an exhaust pipe; the cool air suction hood is jointed to the engine housing side cover, the left air guide plate and the right air guide plate on the upper of the engine secured to the engine housing, thus form two main cooling and ventilating chambers A and B on the left and right upper portion of the engine. An engine bottom air guide plate is secured to the bottom of engine housing side cover and forms the bottom cooling and ventilating chamber C of the engine with the side cover and an engine crank case rear cover. The engine crank case rear cover, the above-mentioned members, a heat insulation chamber body, a sealing ring and a heat insulation chamber rear hood form a double chamber cooling means of the secondary cooling cycle chamber D. The jointing surfaces of the cooling system are increased. The requirements for cooling the engine are more reasonable so that the portions of the engine with high heat are ensured to be timely cooled and provide a highly cooling effective for the engine.

Provided is an electric motorcycle including a traveling motor, and a power supply circuit of an inverter and the like, in which a non-conducting cooling oil is supplied to be brought into direct contact with at least one of an electromagnetic coil of the traveling motor and a circuit board of the inverter. A radiator is disposed outside cases of a power plant and a power control controller so as to allow a traveling wind to pass by. Cooling oil is circulated between the radiator and a case of at least one of the power plant and power control controller. A cooling structure for an electric motor and the like that can obtain a higher cooling efficiency than a conventional art while having a simple structure which hardly causes increases in size, weight, cost, and the like can be provided.

A rotor for a steam turbine for working steam and including at least two rotor parts welded to one another using a circumferential, annular weld zone, which is closed in the circumferential direction. A cooling channel system is formed in the rotor and has at least one inlet flow channel, at least one outlet flow channel and at least one cooling channel. In order to simplify the integration of the cooling channel system in the rotor, the weld zone surrounds a cavity which forms a component of the cooling channel system and through which cooling steam flows.

In a diagnostic device and a diagnostic method for a motor unit of an electric vehicle, an oil degradation / others detection unit is provided which is configured to detect at least any one detection item of a contamination degree, a degradation degree, and an oil amount of an oil used for cooling a motor unit or a reduction gear unit during a non-traveling period when the vehicle is powered on. An abnormalities-time control unit is provided which is configured to send notice of abnormalities of an oil supply system or not permit start of rotation of the motor unit when a detection value detected by the oil degradation / others detection unit is out of a setting range.

A transition piece of a combustor that sends high temperature combustion gas to a turbine includes a cylindrical body wall and cooling air passages. The passages are formed in the body wall so as to extend in an axial direction thereof, and each of the passages has cooling air inlet ports opened at an outer circumferential surface of the transition piece and cooling air outlet ports opened at an inner circumferential surface of the transition piece. The cooling air outlet ports form a plurality of lines in a direction oblique with respect to the axial direction of the body wall. A first distance between a first line of the cooling air outlet ports and a second line of the cooling air outlet ports adjacent to the first line is larger than a second distance between the cooling air outlet ports adjacent to each other.

An object of the invention is to achieve a high intensity, a compact structure, a cost reduction and a heat radiation of a liquid crystal panel, in a projection type video display apparatus employing a combination of LED light sources and a light pipe. The light pipe is formed in a hollow type so as to be utilized as a cooling wind path. Further, a permeable or reflective baffle plate is provided within the light pipe. Further, the light pipe is formed by coating a mirror on an inner surface of an optical case integrally formed by fixing optical parts. Further, a dichroic mirror is arranged in an LED light source outgoing surface.

Provided is a rotary electric machine housing and a rotary electric machine equipped with the same. The housing allows the reduction of press fitting force required in each of two press fitting steps and has a high cooling effect. This rotary electric machine housing includes an internal cylinder 10 allowing press fitting of a stator 20 along an inner diameter end of the internal cylinder. The internal cylinder 10 has an internal cylinder-side tapered face on its outer diameter end surface. The housing further includes an external cylinder 11 having an external cylinder-side tapered face on an inner diameter end of the external cylinder. The external cylinder-side tapered face fits onto the internal cylinder-side tapered face. It is preferred that an inner diameter of the internal cylinder be smaller than an outer diameter of the stator; an outer diameter of the internal cylinder be larger than an inner diameter of the external cylinder; and a difference between the outer diameter of the internal cylinder and the inner diameter of the external cylinder be larger than a difference between the inner diameter of the internal cylinder and the outer diameter of the stator.

A fluid discharge pipe structure comprises a cylindrical body 2, an inlet side connection member 4 having a through hole 3 formed in one end part of the cylindrical body 2, an outlet side connection member 6 having a through hole 5 formed in the other end part of the cylindrical body 2, a spiral blade body 7 having spiral blades 24a, 24b and 24c on an outer circumference thereof and built in close to the inlet side connection member 4 of the cylindrical body 2, and a flip-flop phenomenon generating shaft body 8 built in close to the outlet side connection member 6 of the cylindrical body 2.

A power conversion apparatus comprising a base which includes a first fixation portion and a second fixation portion that are coupled to each other at a desired angle, wherein power modules are fixed on the first fixation portion of the base, a control circuit board is fixed with its first principal surface held in direct or indirect touch with the second fixation portion of the base, and components constituting a control circuit are packaged on the second principal surface of the control circuit board. Owing to the configuration, a versatility for the installation of the power conversion apparatus on a vehicle becomes high, the vibration-proofness of the control circuit board is enhanced, and heats generated by the electronic components, etc. packaged on the control circuit board are sufficiently emitted.

A gas turbine engine includes a front cooling plate provided on a front stationary section in the vicinity of a front side of a turbine disc, a front cooling passage formed between an opposing surface of the front cooling plate and a front surface of a rim of the turbine disc, a rear cooling plate provided on a rear stationary section in the vicinity of a rear side of the turbine disc, and a rear cooling passage formed between an opposing surface of the rear cooling plate and a rear surface of the rim of the turbine disc.

In a structure for internally cooling a turbine blade, a cooling medium passage is provided in the turbine blade. The cooling medium passage has a shape in which a plurality of cylindrical spaces, each having substantially cylindrical shape, extending in parallel with each other partially overlap each other. A cooling medium supply passage that supplies a cooling medium to the cooling medium passage is connected to a portion of the cooling medium passage that includes a peripheral wall, in a direction that forms an acute angle with respect to a longitudinal direction of the cooling medium passage.

A ball screw apparatus is provided which is less likely to increase dynamic friction torque even when a nut is contracted by cooling, and in which cooling effect is made as high as possible and which does not invite excessive machining efficiency droop and increase in pressure loss. The ball screw apparatus includes a screw shaft, a nut screwed with the screw shaft via a plurality of balls, and a cooling section cooling the nut. The plurality of balls to which preload is applied in a two-point contact state, with a preload direction as a tensile direction, are disposed between a screw groove of the screw shaft and a screw groove of the nut. Or, a ratio of the axial length L of the through hole axially formed in the nut and the diameter D of the through hole axially formed in the nut is given by an equation “10≦L / D≦60”.