Nissan Motor Company Limited

Nihon Radiator Co., Ltd.

Yukio Shimada

Toshio Ohashi

Yasushi Inoshita

Naoyoshi Suzuki

Mikio Tanino

Tetsuya Iijima

Syuichi Otani

Susumu Hashimoto

Yutaka Obata

Noriaki Sonoda

Teruo Suda

Toyotoshi Katoh

Noriyasu Saito

Shizuo Kato

Michio Kasamatsu

Katsuichiro Tajima

Takahisa Takeoka

A cooling system for radiator and condenser with an air conditioner having first and second electrically driven blowers for cooling the radiator and condenser, and a cooling cycle operation switch which comprises a control circuit provided on at least one side of the first and second blowers for either stopping or operating at low speed the one of the first and second blowers when any electrical equipment of vehicle such as headlights, wipers, is operated during the cooling cycle, an engine cooling water temperature switch operative to turn on and off the first blower by releasing the control of the control circuit when any of the electrical equipments is operated, and/or a thermal load switch operative to turn of and off the second blower in accordance with the outside temperature conditions by releasing the control of the control circuit, when any of the electrical equipments is operated. With this construction, the blowers for the radiator and condenser can be efficiently operated in accordance with the conditions of the engine cooling water temperature, the outdoor temperature, and the operated or non-operated conditions of the electrical equipments of a vehicle, so as to save electrical power generated by a generator or batteries of the vehicle.

Cooling system for radiator and condenser of vehicles with an air

A heat exchanger comprising a tube for guiding heat-exchange fluid and a fin affixed to the outer side of said tube and adapted to guide air for exchanging heat with said heat-exchange fluid, said fin having an opening formed in the web thereof and a multiplicity of louvers formed astraddle said opening substantially perpendicularly to the direction of the flow of said air as staggered across said opening, said louvers each comprising a louver body separated by a fixed distance from said web of said fin and two legs connecting the opposite ends of said louver body to said web of said fin.

Heat exchanger fin with louvers

An intake unit for an automobile air conditioner comprising a blower section incorporating a blower and an intake section incorporating at least an ambient air inlet and designed for connection to a heater unit incorporating a heater core, which intake unit is provided with a bypass capable of forwarding ambient air to said heater unit without allowing it to pass through said blower section and a bypass door capable of opening said bypass only while said blower is not in operation.

Intake unit

A variable thermostat-type air conditioning system for an automotive vehicle passenger compartment has a dehumidification switch. When a driver depresses the dehumidification switch the compressor begins to operate as if the temperature-adjusting lever were set to the extreme COOL end. Therefore, it is possible to dehumidify or cool the passenger compartment without adjusting the temperature-adjusting lever which is already set to an appropriate lever position. The air-conditioning system according to the present invention comprises a temperature-sensitive element, a variable resistor linked to the temperature-adjusting lever, the dehumidification switch to short the variable resistor, and a thermocontrol amplifier, in addition to a standard compressor, evaporator, etc.

Air-conditioning system for an automotive vehicle

An air conditioner for an automotive vehicle having (1) a duct having at its one end an air inlet, at the upper part of its other end a ventilation outlet, and at the lower part of its other end a floor outlet linked to a defroster outlet; (2) a blower disposed at the air inlet for introducing air into the duct; (3) an evaporator disposed downstream of the duct for cooling the air introduced by the blower; (4) a heater core disposed downstream of the evaporator whose upper side is provided with a first bypass for bypassing the cooled air from the evaporator; (5) an air mixing door disposed upstream of the heater core for adjusting the amount of air passing through the heater core; (6) an air mixing chamber disposed downstream of the heater core and first bypass for mixing the air from the first bypass and heater core, the ratio of the air depending on the angle of the air mixing door; (7) a second bypass disposed between the heater core and the floor outlet for introducing part of the heated air from the heater core directly into the floor outlet; and (8) a smaller door located at the heater core for adjusting the amount of heated air passing through the second bypass, whereby the air temperature at the floor outlet is higher by a constant amount from that at the ventilation outlet.

Air-conditioner for an automotive vehicle

An air conditioning system particularly mounted in a passenger compartment of an automotive vehicle according to the present invention can be fixed in the maximum heating operation mode to produce a maximum effect of the defrosting function by only pushing a push-button switch engaged with a mode selector for maximizing the air blowing rate of a ventilating fan and also engaged with a three-way vacuum switch for opening a vacuum power servomechanism to the air to fix an air mix door in the maximum heating position.

Air conditioning system for an automotive vehicle compartment

An automatic car-cooler clutch control apparatus such that the compressor can forcedly be engaged with the engine when a predetermined period of time has elapsed after the compressor is disengaged or when the vehicle speed reaches a predetermined value, in addition to when a vacuum pressure within the intake manifold is more than a predetermined value, that is, a relatively light load is applied to the engine. The automatic car-cooler clutch control apparatus of the present invention comprises a timer or a speed indicator including one or two switch circuits for energizing the clutch relay to engage the compressor with the engine, regardless of a vacuum pressure within the intake manifold, in addition to a vacuum pressure switch and a vacuum pressure chamber communicated with the intake manifold.

Automatic car-cooler clutch control apparatus

A vehicle mounted air conditioner controlling system is disclosed and of which system comprises a vacuum mode controlling switch (41) being controlled by depression of push-button switches (56) for each mode and mounted on a controller, a shift actuator (43) and vacuum selectors (42, 42'). The system is controlled by uni-directional vacuum signal and blower outlet doors and the air intake door are controlled by respective actuator provided individually therefor.

System for controlling a vehicle mounted air conditioner

An emergency controller for an air conditioning system of an automotive vehicle which incorporates an electronic control circuit in the automatic temperature adjusting means to perform a proportional control over an air mixing door by the use of a vacuum power servo is operated to connect a vacuum source to the vacuum power servo or to cause the air to flow into the vacuum power servo so that the maximum cooling or heating operation can be achieved. Consequently, when a trouble occurs in the electronic control circuit during running in a high-temperature region or low-temperature region, the air conditioning system may immediately be fixed in the maximum cooling or heating operation without intervention of electric circuits.

Emergency controller for an air conditioning system of an automotive

An air conditioner of a vehicle having a selectively controlled conditioned air blowing outlet system using a shift actuator (20) equipped with a number of negative pressure supplying ports (a, b, c, d), in which selection of the operation mode of the conditioner is represented by the supply of a negative pressure signal to any one of the supplying ports, which causes displacement of a piston (31) of the shift actuator (20). The displacement is conveyed to selected one or more of doors provided at the outlets via a link mechanism to control the outlets according to a predetermined program.

Selectively controlled air conditioner outlet system of a vehicle

The present invention relates to a two position valve having a cam and a cam follower mechanism for holding the valve element in either of its two operative positions, depending on the operation of a push button switch arrangement cooperating with the valve so that the valve shifts between positions in response to pushing the switch. The cam takes the form of an arrowhead shaped groove having first and second apex portions in which the cam follower, a spring loaded pin, traces. The groove is formed with a step at one apex to prevent the pin from reversing its trace and to ensure its oneway tracing about the groove.

Push-button type valve

An intake control system comprising a mode selector which receives a first control pressure and a second control pressure, and, according to the temperature inside and outside the vehicle, adapted to supply selectively a plurality of different combinations of the first and second control pressures to a pressure activated actuator to switch an air intake system between at least an outside air position and a recirculating air position. An air intake changeover switch receives the pressure output by an air control switch, a first reference pressure and a second reference pressure, and supplies a certain combination thereof as the first and second control pressures, when operated, to the mode selector, thereby causing the actuator to switch the air intake system to the recirculating air position, irrespective of the switching state of the mode selector.

Air intake control system in air conditioning system

A plug-in fuse assembly is disclosed which includes a fuse element made up of a pair of elongated current-carrying portions in spaced relationship and a fuse-forming link portion extending between the current-carrying portions. The fuse element is placed in an insulating casing with its terminal portions projecting therefrom. Means is provided for providing a fuse opening indication in response to heat generated from the fuse-forming link portion when it opens up.

Plug-in fuse assembly

An exhaust system comprises a catalytic converter placed in flow communication with the exhaust gases from an internal combustion engine and a muffler connected with the catalytic converter. The muffler includes a plurality of exhaust gas conduits arranged to form a continuous exhaust gas flow path via a plurality of expansion chambers, in which at least one of the exhaust conduits, except the first of them, has its exhaust gas inlet end closed and is formed with a group of apertures, or holes, which are disposed and sized, such that broken pieces of catalyst carried by the exhaust gases are prevented from entering the one exhaust gas conduit.

Muffler

A catalytic converter installed in the exhaust system of an engine of a motor car is mounted on a member arranged to vibrate substantially integrally with the engine through a bracket and a cushion member.

Growing community of inventors

Yokohama, Japan

Yukio Shimada