84results about How to "Reduced braking effect" patented technology

A cylinder cutoff control apparatus of an engine initiates a cylinder cutoff mode only when two conditions, namely a low load condition such as a vehicle cruising condition and an intake valve closure timing controlled to a given timing value before a bottom dead center, are both satisfied. A fuel cutoff mode is executed prior to the cylinder cutoff mode. During a transition to the cylinder cutoff mode, the control apparatus holds an intake valve open timing at a given timing value substantially corresponding to a top dead center, simultaneously with reducing an intake valve lift amount of each intake valve, subjected to cylinder cutoff control, to a zero lift. Immediately when the intake valve lift amount is reduced to below a lift threshold value, an exhaust valve lift amount of each exhaust valve, subjected to the cylinder cutoff control, is controlled to a zero lift.

The invention discloses a road dust suppressant, and preparation and construction methods thereof, and belongs to the field of environmental protection and dust suppression. The road dust suppressant consists of the following components in percentage by weight: 0.1-2 percent of dispersible emulsion powder, 0.1-10 percent of an emulsion, 0.2-5 percent of a hygroscopic moisturizer, 0.01-0.5 percent of an absorbent, 2-10 percent of an anti-freezing agent, 0.1-0.2 percent of a wetting agent, 1-25 percent of filler and the balance of water. The road dust suppressant, and preparation and construction methods thereof disclosed by the invention have the benefits that inhalable particulate matters, nitric oxide, sulfide and other harmful matters on roads can be effectively reduced; the road dust suppressant has the characteristics that the environment is friendly, the hygroscopicity and the moisture retention are strong, the corrosion to vehicles and the roads is weak, and the road potential safety hazards cannot be caused.

An aircraft landing gear arrangement comprises a nose landing gear assembly and at least one main landing gear assembly. The nose landing gear assembly has a nose landing gear wheel with a high energy brake apparatus therein. The main landing gear assembly has a main landing gear wheel with a high energy brake apparatus therein and a main landing gear wheel with a motor therein. The motor is used for driving the main landing wheel during taxiing of the aircraft.

A method for braking a vehicle in the context of an emergency stop with the aid of a service braking system and a second braking system. The braking operation can be carried out uniformly and continuously if a positioning member of the service braking system and a positioning member of the second braking system are actuated simultaneously, the braking pressure exerted by the positioning member of the service braking system being reduced in the course of the braking operation, and the braking pressure exerted by the positioning member of the second braking system being increased.

The invention provides a truck retardance control system. The truck retardance control system comprises a power supply, a truck body controller, a brake controller, an engine control system, a retarder control system, a combined instrument, a truck speed sensor, an engine rotation speed sensor, a brake pedal sensor, an engine brake switch and an exhaust auxiliary brake switch. As the truck speed sensor and the engine rotation speed sensor can collect current truck speed and engine rotation speed and one or more brake modes with good comprehensive performances exist within each truck speed and engine rotation speed range, the brake controller can determine the current appropriate brake mode according to truck speed information and engine rotation speed information, which are monitored from a CAN bus, and a pre-marked brake mode comparison relation and recommend the current appropriate brake mode to a driver when the driver steps on a brake pedal; therefore, the driver is effectively instructed to select the appropriate brake mode to improve the brake effect of the current vehicle, enhance the vehicle fuel economy and prolong the part service life.

A brake system for a motor vehicle includes a muscular power-operated or auxiliary power-operated brake system having a master brake cylinder which is operated by muscular power and which is connected to at least one hydraulic wheel brake, and an externally powered brake system having a hydraulic pressure source which is operated by external power and which is connected to the at least one hydraulic wheel brake. The brake system allows for an unchanged pedal characteristic in a hybrid vehicle which has an electric drive motor in addition to a combustion engine, which motor is used as a generator when the brake is actuated.

The present invention provides a rubber composition for a tire tread and a tire manufactured with the same. The rubber composition comprises 100 by weight parts of crude rubber and 60-90 by weight parts of silicon dioxide, wherein the crude rubber comprises 30-50 by weight parts of solution polymerization type styrene-butadiene (S-SBR) rubber and 10-30 by weight parts of butadiene rubber (BR). The content of the styrene in the solution polymerization type styrene-butadiene is 15-25% by weight, and the content of the ethenyl in butadiene is 60-65% by weight. According to the solution polymerization type styrene-butadiene rubber, each module end is modified to a hydrophilic group, and the modules are coupled with each other through tin. The rubber composition for the tire tread has the following advantages: reduced lag loss, maximized low combustion consumption performance, excellent braking performance which is normally reduced because of maximization of low combustion consumption performance, improved machining performance in an unvulcanized state, improved bracking performance in the vulcanized state, improved wearing resistance, improved rolling resistance, etc.

Some embodiments of the present invention provide a system comprising: a first controller operable to assume one of a plurality of respective states, in a first state the first controller being configured to generate a first controller powertrain signal in order to cause a powertrain to develop drive torque, and a first controller brake signal in order to cause application of a brake to one or more wheels, the first controller being configured to generate the first controller powertrain signal and first controller brake signal to cause a vehicle to operate in accordance with the target speed value, wherein when the first controller is in a predetermined one or more states the first controller is configured automatically to perform a brake wipe operation in which the first controller generates the first controller brake signal in dependence on one or more predetermined conditions whilst continuing to cause a vehicle to operate in accordance with the target speed value.

The invention discloses an automobile gear-engaging sliding fuel saving device which comprises a rockshaft and a camshaft. A primary rocker arm and a secondary rocker arm are rotationally mounted on the rockshaft, and a primary cam and a secondary cam are arranged on the camshaft. The other end of the primary rocker arm abuts against an inlet valve or an exhaust valve, and a rocker arm connectingand disconnecting device is arranged between the primary rocker arm and the secondary rocker arm and has a sliding connecting state and a non-sliding disconnecting state. The rocker arm connecting anddisconnecting device is connected with an automobile electric control unit, and a protruding part of the secondary cam jacks the secondary rocker arm in an engine compression stroke and power stroke.According to the automobile gear-engaging sliding fuel saving device, when an automobile enters in a gear-engaging sliding state, the secondary cam can drive the primary rocker arm to act in the engine compression stroke to enable the primary rocker arm to open the inlet valve or the exhaust valve, resistance in the engine compression stroke is greatly reduced, the gear-engaging sliding process is effectively prolonged, and the good fuel saving effect is achieved; and an engine still keeps in power connection with wheels, the braking state of the engine can be restored at any time, and the driving safety is improved.

The present invention provides to a rotor having a short circuit ring of an electrically conductive material. The short circuit ring has a curved outer surface whereby the eddy-current braking effect on the rotor caused by the stray field from the stator is reduced. The curved surface leads to an improved efficiency of an associated electrical motor. The invention further provides a motor with such a rotor and to the use of a rotor in an electrical motor.

The invention discloses a brake integrating a rotary barrel type eddy current retarder and a drum brake, wherein the brake is used for braking and speed reduction of an automobile. A retarder outer rotor, a brake drum and a coil support are coaxial, and the coil support is located between the retarder outer rotor and the brake drum. A plurality of magnet exciting coils provided with iron cores are fixed on the coil support and are evenly distributed along the circumferential direction of the outer circle of the brake drum, the axial leads of the magnet exciting coils are located in the radial direction of the brake drum, and first gas intervals are formed between the magnet exciting coils and the retarder outer rotor, and second gas intervals are formed between the magnet exciting coils and the brake drum. Two adjacent magnet exciting coils provided with the iron cores, facing to the same gas interval, are opposite in polarity. When the automobile speed is low, a brake shoe enables a friction liner to be pressed towards the brake drum to achieve friction braking; when the automobile runs at a normal automobile speed, the magnet exciting coils are powered on to produce electromagnetic braking torque to reduce the automobile speed, and then the automobile is braked through friction. When the automobile speed is high, electromagnetic braking and friction braking act in a combined mode. Braking thermal failure is avoided, and safety performance of automobile braking is improved.

The invention relates to a bidirectional electromagnetic valve for automobile brake systems and belongs to the industry of automobiles. A fixed block is welded to a flux-insulating tube by laser welding. The flux-insulating tube is embedded into a valve body and welded to the body by laser welding. The valve body is fixedly connected with a valve seat by riveting. The lower end face of the valve body is connected with the upper end face of the valve seat. A bent edge of the valve body is connected with a riveting face of the valve seat. The lower end of a moving block is fitted in the valve body. The center of the moving block is provided with an axial stepped through hole; the lower end of the moving block is provided with a T-shaped groove. The moving block is in radial clearance fit with the flux-insulating tube. A piston is in radial clearance fit with a bore of the valve seat. A ring groove is in clearance fit with the T-shaped groove of the moving block. The bidirectional electromagnetic valve has the advantages that valve is simple in structure and easy to manufacture and assemble; when a valve circuit is broken, the valve keeps on, a valve opening has large diameter, the action upon throttling of fluid in a pipeline is not evident, and braking performance remains same during normal hydraulic braking; only one valve opening is provided, leaks are decreased, and operating reliability is improved.

A friction material for brake including reinforcing fibers, a friction modifier, a lubricant, and a binder, characterized by containing, as a part of the component of the friction modifier, 2 to 5 wt % zeolite, 0.8 to 2 wt % antimony oxide and 0.2 to 1 wt % fluorine based polymer.

The invention provides a motorcycle tire (1) for rough terrain, which can maintain the traction performance and braking performance when a motorcycle travels straight and improve the turning performance. Blocks (11) include crown blocks (16) arranged in a center area (Cr) of a tread portion (2), shoulder blocks (17) arranged in a grounded junction (2t) of the tread portion, and middle blocks (18) arranged between the crown blocks (16) and the shoulder blocks (17). The crown blocks (16) have a smallest aspect ratio, which is a ratio (L / W) of the tire circumferential length L to the tire axial width W. and the shoulder blocks (17) have a largest aspect ratio.The crown block (16) is divided into two small block segments (21, 21) by one circumferentially extending slit (20) in a center portion of its widthwise direction to the tire circumferential direction. And the two small block segments (21, 21) includes a shift block (27) shifting in the tire circumferential direction through the extending slit (20)

The invention relates to an elevator and an elevator brake, which elevator contains at least a hoisting machine (5) equipped with a traction sheave (6), a brake (10) affecting the rotational movement of the traction sheave and provided with at least one brake shoe (12) and a braking surface (11a), and hoisting ropes (3), which are fitted to move by means of the traction sheave (6) an elevator car (1) that moves along guide rails (4) . In an emergency braking situation when the elevator car (1) is moving in the upward direction, the brake shoe (12) of the brake (10) is arranged to move in the direction of rotation of the braking surface (11a) .

The invention discloses an electromagnetic retarder arranged on autocar wheel side and a control method thereof. A shaft coupling is arranged on a transmission shaft; the shaft coupling is connected with a semi shaft of an autocar; a rotatable slewing journal and a brake disc are sleeved outside the transmission shaft; an iron core winded with a winding and a friction detent provided with an ABS are fixed on the slewing journal; a rotation disc face of the brake disc is positioned in the iron core; and the winding is connected with an operation handle by a controller. The controller receives brake signals of the operation handle and speed signals fed back by a sensor, judges that whether the autocar has an emergency brake or a non-emergency brake, emits signals to control the size of current led to the winding during the non-emergency brake, and emits signals to control the size of current led to the winding and the size of liquid pressure of the friction detent during the emergency brake. The brake disc generates brake force opposite to the rotation direction when rotating in the winding. The invention can reduce action times of the detent, reduces temperature rise of the friction detent, and enhances the performance of a brake system and the road security.

A stop control apparatus (100) for an internal combustion engine performs stop control of a three-or-less cylinder internal combustion engine (200). The stop control apparatus for the internal combustion engine is provided with: a determining device (161) configured to determine a compression stroke immediately before the internal combustion engine stops; and a throttle valve controlling device (168) configured to control an opening degree of a throttle valve (208) to be a predetermined opening degree while an intake valve (211) is closed in all cylinders, in the compression stroke immediately before the internal combustion engine stops, which is determined by the determining device. This reduces an influence of an intake negative pressure in an intake stroke, and makes it possible to preferably control the crank angle when the engine stops, even in the three-or-less cylinder internal combustion engine.

The invention relates to a method for controlling a side guide of a metal strip (1), in particular in the inlet or outlet of roll stands or driving apparatuses, wherein the side guide comprises a guide (2, 4) disposed laterally to the metal strip (1) on both sides of the metal strip (1), and the guides (2, 4) can be displaced independently of each other. One of the guides (2) is thereby driven by means of position control, and a second of the guides (4) is driven by means of force control, wherein forces of the metal strip (1) acting on the first guide (2) and the second guide (4) are measured. The target force for the second, force-controlled guide (4) is thereby prescribed as a function of the measured force on the first, position-controlled guide (2), wherein as the force on the first, position-controlled guide (2) increases, the target force for the second, force-controlled guide (4) is reduced. In particular, damage to the guides (2, 4) and to the metal strip (1) can be prevented or at least reduced by means of said type of controlling.

A multiplier type fishing reel has a frame, two side plates which are mounted on the frame, a line spool which is mounted in the frame and rotatable about an axis of rotation, and a first and a second brake for braking the line spool. The braking effect of the first brake is adjustable with the aid of a first adjusting device which is turnable about an axis parallel to the axis of rotation and the braking effect of the second brake is adjustable with the aid of a second adjusting device which is turnable about an axis parallel to the axis of rotation. The first and the second adjusting devices are arranged in one of the side plates and have respectively a first and a second tooth portion. An operating device, which is turnable about an axis parallel to the axis of rotation, is mounted on said one side plate and has at least one tooth element meshing with both tooth portions to make, in turning of the operating device, respectively the first and the second adjusting device turn for adjusting the braking effect of the respective brakes on the line spool.

A method for slowing transfer of a heavy work machine on a sloping base using a transportation device equipped with wheels, the work machine including a body, a crawler chassis fitted beneath thebody, a set of booms having at least one operating cylinder, a first end and a second end, said set of booms being pivoted at the first end to the work machine and a selected auxiliary device is pivoted at the second end, and a brake surface connected to the auxiliary device, in which method includes the steps oftransferring the work machine by supporting the work machine on the crawler chassis at least partly on top of the transportation device,towing the work machine using a transfer vehicle with the aid of the transportation device,using said operating cylinder of the set of booms to press the brake surface against the sloping base to create friction to slow transfer speed of the transportation device on the sloping base, andadjusting pressing of the brake surface taking place through the auxiliary device using the operating cylinder or one set of booms. An arrangement in connection with a heavy work machine for transferring the work machine on a sloping base is also described.

Disclosed is a method for increasing a braking effect in a motor vehicle with a hydraulic brake system. An energy supply unit, which is used to increase the brake pressure in at least one wheel brake, is switched on when the brake pressure adjusted by the driver in a master brake cylinder exceeds an activation threshold, which is determined depending on a detected vehicle deceleration. A check is made whether an unbraked trailer is coupled to the vehicle, and in that the activation threshold PAT is raised, if the presence of an unbraked trailer that is coupled to the vehicle is detected.

The invention relates to a rubber composition for a tire tread and a tire manufactured using the same, and provides a rubber composition for a tire tread which comprises 100 parts by weight of rubber raw materials containing emulsion polymerized styrene-butadiene rubber, 7-13 parts by weight of environmental friendly softeners, 73-79 parts by weight of fillers, 1.6-1.9 parts by weight of vulcanizing agents, and 0.15-0.25 parts by weight of thiuram vulcanization accelerators. The rubber composition for a tire tread minimizes the release amounts of polycyclic aromatic hydrocarbons (PAH) and nitrosamines, so the composition not only is environmental friendly but also has excellent low fuel consumption, braking performance, and abrasion resistance.

A motor vehicle fitted with a control system for applying braking effect to foundation brakes acting on each wheel of the vehicle, when the braking effect provided by auxiliary brakes, acting on the driven wheels, is lost or significantly reduced is described. Sudden loss of auxiliary brake force can be felt as very bad drivability of the vehicle, a situation that typically occurs in case of low friction between road and tires or if the auxiliary brakes are down controlled to avoid engine stop. By use of a control system, these situations can be avoided. The control system includes a sensor, and a computer for computing and applying the braking effect to the foundation brakes to compensate for the loss of auxiliary braking force. Disclosed is also a method for applying braking effect to the foundation brakes of a motor vehicle.

An arrangement for feeding documents piecemeal from a document bundle (9) comprises a banknote separator (200) which includes two mutually biased rollers (4,6) that are driven by a drive motor (1) that also drives a dispensing roller (3) which functions to dispense documents from the bundle. The rollers (4,6) of the roll pair are rotationally coupled together via a freewheeling hub. The second roller (6) does not rotate during dispensing of a document. Upon completion of a dispensing operation, the drive direction of the motor (1) is reversed, so as to bring the second roller (6) to a new angular position.

A dirt scraper for a disc brake of a vehicle includes at least one scraper blade adapted to abut a braking surface of the disc for scraping off dirt when the disc rotates, and a heat sensitive structure for moving the at least one blade from a first position where it abuts the surface of the disc to a second position where it does not abut the surface of the disc, when the temperature of the heat sensitive structure increases, and vice versa.

There is described a method for detecting the ambient pressure by means of a pressure sensor in the intake pipe of an internal combustion engine. A throttle flap is opened so that the pressure drop via the throttle flap can be neglected. The dethrottling of the internal combustion engine is compensated by the appropriate adjustment of the cam shaft in accordance with the operating state of the internal combustion engine, so that the measuring method is not being felt by the driver.

There is described a method for detecting the ambient pressure by a pressure sensor in the intake pipe of an internal combustion engine. A throttle flap is opened so that the pressure drop via the throttle flap can be neglected. The dethrottling of the internal combustion engine is compensated by the appropriate adjustment of the cam shaft in accordance with the operating state of the internal combustion engine, so that the measuring method is not being felt by the driver.

An arrangement for feeding documents piecemeal from a document bundle (9) comprises a banknote separator (200) which includes two mutually biased rollers (4,6) that are driven by a drive motor (1) that also drives a dispensing roller (3) which functions to dispense documents from the bundle. The rollers (4,6) of the roll pair are rotationally coupled together via a freewheeling hub. The second roller (6) does not rotate during dispensing of a document. Upon completion of a dispensing operation, the drive direction of the motor (1) is reversed, so as to bring the second roller (6) to a new angular position.