Abstract: An ignition device for rotary piston engines. The device has an ignition plug disposed in a bore formed in an inner wall surface of a casing of the engine. The plug is of the surface gap and air gap discharge type and has a discharge end constituted by inner and outer electrodes spaced apart from each other through a surface gap discharge distance defined by a surface of an insulative sleeve encircling the inner electrode and an air gap discharge distance defined between the insulative sleeve and the outer electrode. The surface gap discharge distance is not less than 0.6 mm and not greater than 1.3 mm. The air gap discharge distance is not less than 0.7 mm and not greater than 1.4 mm. The surface gap discharge distance is not greater than the air gap discharge distance. The outer electrode has a tip end axially retreated with respect to the surface of the insulative sleeve by a distance between 0.3-1.0 mm.

Abstract: Automobile door lock assembly of push-button type including a rotatable element axially movable with a push-button and an annular element co-axial with the rotatable element. The rotatable element is formed with an axially extending slot having a shoulder defined by a wide and narrow portions of the slot. The annular element has a lug adapted to be placed in the slot of the rotatable element so that, when the lug is placed in the position engageable with the shoulder, the axial movement of the rotatable element is prohibited but, when the rotatable element is rotated to place the lug out of the path of the shoulder, the axial movement of the rotatable element is allowed to release the latch in the lock assembly. The annular element has manually actuatable lever so that it can be actuated into locking position without using a key.

Abstract: In a double sliding automobile window, a sealing structure is provided between two sliding window glass panels. The sealing structure includes a sealing strip extending vertically between and secured to the upper and lower run channels and having a pair of sealing lips adapted to engage respectively the window glass panels.

Abstract: An extensible stay extending between a rear end closure and the body of the automobile. The stay is attached to the body at the end adjacent to the body through an L-shaped bracket. A bracket cover is provided to cover the L-shaped bracket so as to avoid any danger by having the bracket exposed. The appearance is also improved by the cover.

Abstract: Internal combustion engine having an intake port formed in cylinder head and a first and second intake passages both connected with said intake port. The intake passages are respectively provided with throttle valves and the throttle valve in the second intake passage is opened only under a heavy load operation. The ignition timing is advanced when the throttle valve in the second intake passage has been brought into operation.

Abstract: Engine starting device which, if engine temperature is at a level such that vaporized fuel may be present in a carburetor while an engine is stopped, causes a throttle valve to open a certain amount when the cranking motor is actuated, whereby such vaporized fuel is rapidly evacuated and an air-fuel mixture having the correct air-fuel ratio to permit rapid starting is supplied to the engine.

Abstract: Internal combustion engine having a primary and a secondary intake passage for each cylinder, the passages opening to the combustion chamber through a common intake port having an intake valve. A substantially radially extending partition plate is disposed at the intake port so as to separate the two passages one from the other when the intake valve is closed. The primary intake passage has a centroid in a cross-section at the intake port and is so located that a line passing through the centroid and the center of the intake port intersects a projection of the cylinder bore at a point of intersection and makes an angle of 50.degree. to 80.degree. with a tangential line of the projection of the cylinder bore at the point of intersection.

Abstract: The engine has a duct connecting the gases in the exhaust gas crossover passage to the intake manifold and providing with a flow control valve for controlling the flow in the duct in such that said valve is moved to open by signals from both of a clutch-actuation detection device and a throttle valve-opening detection device and is kept opening by signal from a timer to be actuated by said two devices.

Abstract: An exhaust gas recirculation device in which exhaust gas from the engine of a vehicle, for example, may be recirculated via two separate lines to portions of a carburetor which are upstream and downstream of a throttle valve, to permit a suitably large amount of exhaust gas to be recirculated when necessary and which includes control means which stops the flow of gas in both lines when the engine is being warmed up, and stops the flow of gas in the upstream recirculation line only when engine load, engine speed, or vehicle speed is high, or when there is a risk of icing in the carburetor, whereby the disadvantages of recirculated exhaust gas during particular engine operating conditions are avoided.

Abstract: Internal combustion engine having an intake port formed in cylinder head and first and second intake passages both connected with the intake port. The intake passages are respectively provided with throttle valves and the throttle valve in the second intake passage is opened only under a heavy load operation. The ignition timing is advanced or an additional supply of fuel is provided in the transient period wherein the throttle valve in the first intake passage has reached substantially fully open position and the throttle valve in the second intake passage has started to open so as to supplement any decrease in the engine output in this period.

Abstract: An exhaust gas recirculation system has at least two recirculation lines to permit recirculation of a large quantity of exhaust gas when required and in which recirculation of exhaust gas is reduced or completely cut off in accordance with particular engine operating conditions.

Abstract: A front seat includes a seat cushion and a reclining back cushion, and is so arranged as to move back and forth between forward and retracted positions. The seat is temporarily released from the latched position for moving the seat towards the most forward position for facilitating movement of the rear seat passengers into and out of the vehicle. Thereafter, the front seat is again returned and latched in an original position by the operation of latch releasing mechanism employed in the front seat.

Abstract: An exhaust gas purification system for use in an internal combustion engine equipped with a dual exhaust system. The exhaust gas purification system includes a secondary air supplying port of a secondary air supplying passage opened into a selected exhaust pipe belonging to one of first and second exhaust pipe groups, while an exhaust gas deriving port of an exhaust gas recycling passage for recycling the exhaust gases to a downstream of the carburetor throttle valve is provided in another exhaust pipe belonging to the other of the first and second exhaust pipe groups for effective suppression of NO.sub.x through accurate control of the amount of exhaust gases to be recycled.

Abstract: The invention relates to a method of forming aluminum diffusion layer including the steps of dipping a ferrous base alloy workpiece containing nickel of more than 8.0% by weight in a molten metal bath of aluminum or aluminum alloy having temperature of 650.degree. to 750.degree. C. for 30 to 120 seconds, subjecting the ferrous base alloy workpiece thus treated to a first heat treatment at temperature from 750.degree. to 850.degree. C. for at least 60 minutes, subsequently subjecting the ferrous base alloy workpiece thus treated to a second heat treatment at temperature of 900.degree. to 1000.degree. C. for at least 30 minutes, and further subjecting the ferrous base alloy workpiece thus treated to a third heat treatment under predetermined conditions at set temperatures and durations for the separation of an aluminum compound layer formed on the workpiece and for the formation only of aluminum diffusion layer on the surface of the workpiece.

Abstract: Automobile having a tailgate and a rear storage compartment associated with a cover. The cover is detachably hinged to the automobile body at the front edge and connected by a flexible strap with the tailgate so that it can be raised upon opening of the tailgate. The strap is passed through a ring which is provided on one end of a rubber strip, the other end of the rubber being secured at the bottom of the cover whereby the strap can be retracted beneath the cover whenever the strap is relieved of tension.

Abstract: A friction bearing structure for the adjustable support of a ventilator window shaft employed in an access door of an automotive vehicle, which comprises a base block having a rigid tongue member and a support hole, and a movable tongue member cooperative with the rigid tongue member. The rigid and movable tongue members have their respective surface area so shaped as to tightly contact the ventilator window shaft under friction so that, once the ventilator window is rotated to any desired position from a closed position, the ventilator window can be retained in position at such desired position. The structure further comprises a wedge member having a mounting hole through which an adjustment screw member loosely extend, and a pressure backing member for backing up a pressure exerted by the wedge member when the latter is held in position with the adjustment screw member being fastened into the support hole so that the pressure can be directed towards the movable tongue member.

Abstract: Engine acceleration detection apparatus comprising a diaphragm unit with a first chamber connected directly to a point downstream of a throttle valve in a carburetor, a second chamber connected to the same point through a delay element, a diaphragm which is provided between the first and second chambers and is displaced and causes displacement of an actuation rod element to actuate regulation means for adjustment of exhaust gas recirculation or other factors relating to engine operation when pressure increases downstream of the throttle valve, and atmosphere connection means which renders the diaphragm unit inoperative by connecting the second chamber thereof to the atmosphere in certain operating conditions, such as acceleration from high speed.

Abstract: Vehicle body structure having a cowl panel assembly extending transversely between a pair of transversely spaced front pillars, said cowl panel assembly having a windshield glass support portion to which a windshield glass is adhesively attached. The glass support portion is formed with a planar rearward extension, and a dashboard having a planar rearwardly extending upper flange is welded at the flange to the rearward extension of the cowl panel assembly. An instrument panel is connected at its front end with the rearward extension of the cowl panel or the upper flange of the dashboard panel.

Abstract: An exhaust gas purification system for use in an internal combustion engine equipped with a dual exhaust system. The exhaust gas purification system includes a secondary air supplying port of a secondary air supplying passage opened into selected one of a first or second group of exhaust pipes, while an exhaust gas deriving port of an exhaust gas recycling passage for recycling the exhaust gases to an upstream of the carburetor throttle valve is provided in the exhaust line at a downstream from the above secondary air supplying port for effective suppression of NOx through accurate control of the amount of exhaust gases to be recycled.

Abstract: An improved air-fuel mixture intake system for use in a internal combustion engine having a light load side intake passage and a heavy load side intake passage which are joined each other in the vicinity of an intake valve of the engine. The intake system includes engine deceleration detecting means, a first on-off valve provided in a fuel supplying path of a light load side carburetor, an air supplying passage opened into the heavy load side intake passage at downstream of a heavy load side carburetor throttle valve, and a second on-off valve provided in the air supplying passage for reduction of noxious hydrocarbon formation and prevention of after-burning, with suppression of undesirable knocking.