Abstract:
A circular disc shape case 11 includes a motor rotor chamber 12, a bearing chamber 13 and a gear chamber 14 piled sequentially and being communicated with each other. A suction port 15 is connected to the motor rotor chamber 12, and a discharge port 16 is connected to the gear chamber 14, which communicate with outside respectively. A rotating shaft 18 having an end positioned in the motor rotor chamber 13 and the other end extending to the gear chamber 14. A rotor 22 is fixed around the rotation shaft 18 in the motor rotor chamber 13. A first bearing 19 is provided for supporting the end of the rotating shaft 18 in radial and thrust directions. A second bearing 20 is provided in the bearing chamber 13 for supporting an intermediate portion of the rotating shaft 18 in radial direction. A trochoid gear 25 is provided in the gear chamber 14, having an outer rotor 26 and an inner rotor 27, which functions as a pump, taking in a fluid through the suction port pipe 15, and discharging the fluid from the discharge port 16.
Abstract:
A rotary lobe pump includes two geared-together, counter-rotating shafts, to which are affixed rotors with interdigital lobes. Adjustment of the angular relationship of the rotors uses a clamping device within each rotor. The clamping device consists of a tapered, slotted bushing that is forced between a mating taper on the rotor and a locking device on the shaft by means of a flanged fastener mated to each pump shaft's threads.
Abstract:
A rotary lobe pump includes two geared-together, counter-rotating shafts, to which are affixed rotors with interdigital lobes. Adjustment of the angular relationship of the rotors uses a clamping device within each rotor. The clamping device consists of a tapered, slotted bushing that is forced between a mating taper on the rotor and a locking device on the shaft by means of a flanged fastener mated to each pump shaft's threads.
Abstract:
There is provided a cylinder injection type internal combustion engine capable of performing stratified charge operation at the time of a vehicle speed of 120 km/h and/or an engine rotational speed of 3200 rpm to enhance the fuel efficiency and/or to observe the emission regulations. In the internal combustion engine, a stratum of air and/or air flow is formed between a fuel spray injected from an injection valve and the top face of a piston and/or the wall surface of a combustion chamber, and a face shape contrived to guide the air flow is formed on the top face of the piston. Also, the stratified charge operation can be performed even at the time of cold start or cranking.
Abstract:
A combustion method for an internal combustion engine which prevents the occurrence of engine knock and improves fuel consumption and economy, by spray injecting part of the fuel used in one cycle into a combustion chamber, performing preliminary combustion of a diluted air-fuel mixture below combustible limits at a temperature lower than the self-igniting temperature of the fuel, then injecting the remaining fuel into the combustion chamber, and performing main combustion by flame propagation using spark plugs as ignition sources. Accordingly, the combustion method for an internal combustion engine of the present invention can attain stable combustion even at high air-fuel ratios and makes high compression ratios possible.
Abstract:
A water-cooled, two-stroke crankcase compression internal combustion engine for powering a motor vehicle. The engine includes a piston, piston rings, and cylinder bore arrangement that are constructed to inhibit piston ring sticking by cooling the piston ring gaps by holding them against rotation and spraying fuel from a fuel injector toward the gap for cooling it. In addition, overheating of the small end of the connecting rod is inhibited by surface treating portions of the piston to render them harder and less heat conductive. Scuffing of the piston, piston rings, and cylinder bore are reduced by surface treating the area of the head of the piston around the ring grooves so as to trap and retain lubricant.
Abstract:
A small bore internal combustion engine our-stroke operating cycle which is adapted to function with natural gas and other gaseous fuels and which is particularly useful with residential heat pump assemblies with maximum life expectancy, high thermal efficiency, and low exhaust gas emissions, wherein provision is made for assembling the engine in a compact heat pump system with a low operating noise level and an extended engine maintenance interval.
Abstract:
In a heat insulating engine of this invention, the piston head is made up of a retainer body, a heat insulating member mounted on the retainer body, and a thin ceramic member formed over the upper surface of the heat insulating member exposed to the burning gas and over the circumference of the former two members. The retainer body is mounted to a piston skirt through a heat insulating gasket. The cylinder is so constructed that the piston head does not contact the cylinder liner upper portion of the head-liner but can contact the cylinder liner lower portion. When the piston is situated close to the top dead center, the heat insulating structure of the combustion chamber prevents heat from being released from the piston head. When the piston is pushed down, the heat of the piston head is released through the cylinder liner lower portion, rapidly reducing the temperature in the combustion chamber, preventing fresh air taken in from thermally expanding and therefore preventing a reduction in the air intake efficiency.
Abstract:
In the European patent application publication EP OS O No. 102 441 a high pressure pump is shown which uses tapered rings (disc spring derivatives) which are clamped together as a pump chamber. The clamping rings required cutting into sections which is expensive and time consuming. The present discoverings now show that the friction at compression of the coned rings was very large. The present invention now discovers that radially flexible ring portions should be provided to the coned ring portions in order to eliminate the friction and to reduce the time and cost of the production of the pump arrangement. The invention further provides U-type pump elements which eliminate the clamping rings. A second pressure led into the space in the housing which surrounds the pump elements makes it possible to increase the pressure in the pump, for example, to double the pressure.
Abstract translation:在欧洲专利申请公开EP OS O No.102 441中,示出了使用作为泵室夹紧在一起的锥形环(碟形弹簧衍生物)的高压泵。 夹紧环需要切割成昂贵且耗时的部分。 目前的发现现在表明,锥形环压缩时的摩擦力非常大。 本发明现在发现,为了消除摩擦并减少泵装置的生产的时间和成本,应将径向柔性环部分设置到锥形环部分。 本发明还提供了消除夹紧环的U型泵元件。 引入围绕泵元件的壳体中的空间的第二压力使得可以增加泵中的压力,例如使压力加倍。
Abstract:
An arrangement which includes a coned ring forms with the coned portion an interior space. The interior space decreases and increases its volume, when the coned portion of the ring is compressed and de-compressed. The coned ring has a radial outer portion and a radial inner portion. The radial inner portion forms a bore. The radial outer portion is provided with a seat face portion. The seat face portion contacts and bears a respective portion of a body, which may be a second coned ring, a thrust body or an outer ring. The arrangement is utilized to center a coned ring relative to a neighboring body or to provide and effectively seal a working chamber for the reception and expulsion of a fluid.