32results about How to "Eliminate running noise" patented technology

An engine ECU executes a program including the steps of: detecting an engine speed NE, engine load, and engine coolant temperature (S100, S110, S115); when determination is made of being in an idle region (YES at S120), determining whether in a cold idle region, a transitional region, or a warm idle region (S130); injecting fuel from an intake manifold injector alone when in the cold idle region (S140); injecting fuel from the intake manifold injector and injecting fuel from an in-cylinder injector at the feed pressure when in the transitional region (S150); and injecting fuel from the in-cylinder injector at the feed pressure when in the warm idle region (S160).

A quick assembling / disassembling structure for motor handle module of electrical gear box includes a firearm body having a trigger and sideways connected to a grip that forms a connection slot and a snap-fitting element rotatably mounted to the firearm body at a location adjacent one side of the trigger. The snap-fitting element has an end forming a snap-fitting section in retaining engagement with the connection slot. The firearm body forms a coupling section coupled with the grip and having inside surfaces forming a guide section. A connection section is coupled with the coupling section. A motor is provided with an elastic member. Pulling the snap-fitting element to move the snap-fitting section away from the connection slot of the grip releases the grip. In coupling the grip to the firearm body, the guide section helps reducing the interference between the gear mechanism so as to achieve easy replacement of components.

Disclosed is a dishwasher that excludes operating noise transferred forwardly through a gap between a lower end of a main body and a mounting surface, thus minimizing noise perceived by a user. The dishwasher includes a main body provided with a washing chamber; and a front panel installed at a lower part of a front surface of the main body, and provided with a lower part covering a gap between the lower end of the main body and a mounting surface. The front panel includes a closure made of a flexible material connected to the lower part of the front panel.

An engine ECU executes a program including the steps of: detecting an engine speed NE, engine load, and engine coolant temperature (S100, S110, S115); when determination is made of being in an idle region (YES at S120), determining whether in a cold idle region, a transitional region, or a warm idle region (S130); injecting fuel from an intake manifold injector alone when in the cold idle region (S140); injecting fuel from the intake manifold injector and injecting fuel from an in-cylinder injector at the feed pressure when in the transitional region (S150); and injecting fuel from the in-cylinder injector at the feed pressure when in the warm idle region (S160).

Disclosed herein is a reclining apparatus for a vehicle seat that is capable of improving coupling strength and entire durability and removing operation noise by removing a clearance between components at the time of a reclining operation and is capable of decreasing a cost and a weight by decreasing an entire size.

The present invention relates to an actuator apparatus of an active accelerator pedal, which can provide a driver with a pressing-force rise mode or a vibration mode in accordance with the operational condition of the accelerator pedal and the traveling condition of the vehicle; therefore, it is possible to improve fuel efficiency and also help safe traveling. An actuator apparatus of an active accelerator pedal of the present invention includes: an actuator housing fixed to a pedal arm housing; a stator fixed to the actuator housing and electromagnetized by current transmitted though the control of an ECU; a carrier having one end disposed in a stator and the other end disposed toward the pedal arm through the actuator housing, and applying pressing-force to the pedal arm while protruding from the stator when current is applied to the stator; and a position sensor disposed in the actuator housing and detecting the amount of rotation of the pedal arm to determine the amount of current applied to the stator through the control of the ECU.

A driver circuit is provided for a stepper motor which utilizes a processor that outputs a PWM signal. The driver circuit includes an H-bridge circuit having first and second inputs, and a switching circuit having an input and an output. The first H-bridge input and the switching input connect to the PWM signal output from the processor, and the switching output connects to the second H-bridge input. The switching circuit performs an inversion of a duty cycle of the PWM signal when the PWM signal is present, and a non-inversion of the duty cycle when the PWM signal is not present.

Formed in a scroll type compression mechanism (15) is a connection passageway (46) with a discharge opening (49) through which refrigerant compressed by the compression mechanism (15) flows out into a clearance space (18) defined between the compression mechanism (15) and a drive motor (16). A muffler space (45) in communication with the connection passageway (46) for reducing operating noise is formed in the compression mechanism (15). A motor cooling passageway (55) for circulation of working fluid which has flowed out into the clearance space (18) is formed between the drive motor (16) and an inner surface area of a casing (10). A guide plate (58) is disposed in the clearance space (18). Formed in the guide plate (58) is a flow dividing concave portion which causes a part of refrigerant flowing toward the motor cooling passageway (55) to be distributed in a circumferential direction and toward an internal end (36) of a discharge pipe (20) located in the clearance space (18).

The invention discloses a dust concentration detecting and sensing device which aims at solving the problems of potential safety hazards and low detection accuracy generated when a suction fan is adopted to suck dust gas into a detection bin. The dust concentration detecting and sensing device comprises a light projector, a photoelectric detecting converter and a detection bin, wherein the detection bin comprises an airflow passage which is through up and down and is arranged in the middle of a bin body; a light projector passage and a photoelectric detecting converter passage which extend inwards and intersect in the airflow passage are arranged on the two sides of the outlet of the airflow passage; the light projector passage is provided with one segment extending forwards to the surface of the bin body; an airflow passage extension tube with an upward opening is mounted at the outlet of the airflow passage, and a PTC ceramic thermistor heater is mounted outside the airflow passage extension tube; the photoelectric detecting converter is mounted at the inlet of the photoelectric detecting converter passage, and the light projector is mounted at the inlet of the light projector passage; a communicating tube with a downward opening is mounted at the outlet of the light projector passage, and a gas collection constant-current cover with a downward opening is mounted at the inlet of the airflow passage.

The invention relates to the technical field of medical detection, in particular to a sampling needle driving mechanism. A mechanical mechanism part of the driving mechanism is reset to achieve high accuracy; the driving mechanism comprises a pedestal, at least two guide shafts, a vertical plate and a rocker arm driving slide block, wherein the vertical plate is arranged on one side of the pedestal; the two guide shafts are arranged on the pedestal at interval; the vertical plate and the guide shafts are parallel with each other and are vertical to the pedestal; the rocker arm driving slide block is provided with guide holes corresponding to the guide shafts; and the guide shafts are in interference fit with the guide holes, so the rocker arm driving slide block can slide along the guide shafts under the power action. In the further technical scheme, the guide shafts made of a special material are matched with a shaft sleeve, so that running noise is eliminated, cost is lowered and service cycle is prolonged.

A braking apparatus for a vehicle may include: a pedal stroke sensing unit configured to sense a pedal stroke of a brake pedal, and output a pedal stroke signal; and a control unit configured to control a brake actuator for braking the vehicle, based on the pedal stroke signal inputted from the pedal stroke sensing unit, and output a ramp signal in which information on whether a braking action of the vehicle has been performed is reflected, based on a reference voltage signal which is preset to determine whether the brake pedal is stepped on and a voltage signal converted from the pedal stroke signal.

Disclosed herein is a reclining apparatus for a vehicle seat that is capable of improving coupling strength and entire durability and removing operation noise by removing a clearance between components at the time of a reclining operation and is capable of decreasing a cost and a weight by decreasing an entire size.

In association with a solenoidal coil 10 being energized to unlock a shift lever, a first movable core 9 and a second movable core 11 magnetically stick together so as to rotationally move in unison from an original position in which the first movable core 9 engages with the second movable core 11. Because the first movable core 9 and the second movable core 11 stick together before unlocking the shift lever, it is possible to avoid the first movable core 9 from hitting the second movable core 11 so as to eliminate an operational noise which would otherwise be produced by hitting the first movable core 9 against the second movable core 11. A lock plate 7 and a link plate 8 are rotatably provided around a rotational center 6 in relative to the solenoidal coil 10. This prevents the lock plate 7 and the link plate 8 from moving rotationally in unison with the solenoidal coil 10, thus enabling the lock plate 7 and the link plate 8 to a smooth and quick rotational movement.

In association with a solenoidal coil 10 being energized to unlock a shift lever 1C, a first movable core 9 and a second movable core 11 magnetically stick together so as to rotationally move in unison from an original position in which the first movable core 9 engages with the second movable core 11. Because the first movable core 9 and the second movable core 11 stick together before unlocking the shift lever 1C, it is possible to avoid the first movable core 9 from hitting the second movable core 11 so as to eliminate an operational noise. A lock plate 7 and a link plate 8 are rotatably provided around a rotational center 6 in relative to the solenoidal coal 10. This prevents the lock plate 7 and the link plate 8 from moving rotationally in unison with the solenoidal coil 10 so as to insure a smooth and quick rotational movement.

The invention provides a split type high-speed starter-generator with position feedback which comprises a stator and a rotor. The stator and the rotor form a brushless motor; the stator is fixed at acasing spigot end of a micro-gas turbine; the front end of a rotating shaft of the rotor penetrates into the micro-gas turbine and is fixed by a bearing; the end part of the micro-gas turbine is fixedby a baffle around the rotating shaft; the rotating shaft and the baffle are matched to form a dynamic sealing structure; and the rotating shaft is butted with a transmission shaft of the micro-gas turbine to realize torque transmission. According to the invention, the volume and the weight of a starter-generator system are effectively reduced; the volume of the starter-generator of 1.6 kW in thetraditional scheme is reduced from phi 120 * 200 to phi 85 * 93, and the weight is reduced from 9.8 kg to 1.9 kg; speed reducers are omitted, and thus friction loss and operation noise between the speed reducers are eliminated; and the transmission efficiency is improved.

The invention discloses a low-pressure air supply compensator structure of a power plant boiler. The structure comprises a low-pressure fan, a first air supply pipe, a nonmetal compensator, a second air supply pipe and a boiler, wherein the low-pressure fan is connected to the first air supply pipe; the first air supply pipe is connected to the nonmetal compensator; the nonmetal compensator is connected to the second air supply pipe; the second air supply pipe is connected to a boiler; and a high-temperature resistant and corrosion resistant paint layer is coated on the inner wall of the nonmetal compensator. The structure adopts the nonmetal compensator, can eliminate the influence of the vibration of the low-pressure fan on the boiler, can eliminate the operation noise of pipes, can bear high temperature, prolongs the service life of the compensator, relieves the maintenance burden of a power plant, and is excellent in economic benefit.

A braking apparatus for a vehicle may include: a pedal stroke sensing unit configured to sense a pedal stroke of a brake pedal, and output a pedal stroke signal; and a control unit configured to control a brake actuator for braking the vehicle, based on the pedal stroke signal inputted from the pedal stroke sensing unit, and output a ramp signal in which information on whether a braking action of the vehicle has been performed is reflected, based on a reference voltage signal which is preset to determine whether the brake pedal is stepped on and a voltage signal converted from the pedal stroke signal.

A controller has a state observation unit to acquire a present state of a robot as a state variable, a label data acquisition unit to acquire, as a label, a detected value of a force sensor attached to an arm and to detect necessary data for control of a pressing force, and a learning unit to generate a learning model indicative of the correlation between the state variable acquired in a no-load state and the label acquired under the state variable acquired in the no-load state and to estimate the detected value of the force sensor. The controller controls the pressing force by using the detected value of the force sensor acquired in the present state of the robot acquired in a loaded state and the detected value of the force sensor estimated by the learning unit based on the present state of the robot acquired in the loaded state.

A swing arm cam type two-stroke straight-shaft internal combustion engine, which is a further improvement on the basis of the 346 swing arm two-stroke straight-shaft internal combustion engine. It consists of a single-track elliptical cam on the straight shaft and a single arc slide on the swing arm Coordination replaces the complex operation mode of 346 swing arm double rails connecting and cooperating with each other. The machine runs in continuous contact during one revolution, the operation stability of the machine is increased and the operation noise is completely eliminated. The manufacturing process of the core components of the machine is greatly simplified. The manufacturing cost is further greatly reduced, the force arm of the elliptical cam is further lengthened, and the mechanical efficiency is further improved. At the same time, for 4 models in the one-unit series and 3 models in the two-unit series, the improvement of the single-track elliptical cam and the single-arc slideway swing arm has been made. Compared with the internal combustion engine with the same volume crankshaft, the mechanical efficiency is increased by 3-6 times, and the weight of the machine body is reduced by 3-6 times.

The invention discloses a thermosensitive ceramic heater combination comprising mounting sheet metal. The mounting sheet metal is provided with corresponding mounting holes connected with the whole combination and matching with mounting support fitting holes; the mounting sheet metal is further provided with an insulating positioning junction box. The invention further discloses a heater of the thermosensitive ceramic heater combination, a production process of the heater and a mounting support of the heater. Through the process design wherein heat transfer pipes are subjected to gradual rolling and non-heat conductive faces are subjected to positioning and clamping, and through the structural design of positioning wheels, operational noise of the heater is eliminated. Through the design where incoming and outgoing power leads of the heater are all gathered to the positioning junction box located on the mounting sheet metal, electric connection reliability is improved, and reasonable wiring, electric connection safety and reliability and compact structure are achieved. Meanwhile, the mounting support helps greatly improve connection reliability and application safety of a heating rod and a connecting wire set of the heater. The thermosensitive ceramic heater combination, the heater and the mounting support have the advantages that manufacturing cost is greatly reduced and production efficiency is improved.