摘要:
Transmission unit consisting of a continuously variable transmission (1); a hydraulic cylinder/piston unit (3) to set the transmission ratio of the continuously variable transmission (2); a pressure compensation chamber (4) working in conjunction with the cylinder/piston unit (3); and a passage organ (5) having at least one passage way (6) connecting the pressure compensation chamber (4) with the piston chamber (7) of said cylinder/piston unit (3), characterized in that the passage way (6) stretches at least partially along the outer surface of the passage organ (5).
摘要:
Device for regulating a continuously variable transmission which consists of a primary pulley (3) placed on an ingoing shaft (2); a secondary pulley (6) placed on an outgoing shaft (5); a transmission element (8) provided between the pulleys (3-6) whose transmission ratio can be altered by moving pulley halves (4-7) of the above-mentioned pulleys (3-6); a pressure regulating valve (17) with a slidable valve disk (23) to regulate the pinch force exerted on the transmission element (8); and means to adjust the pinch force as a function of the engine torque, characterized in that these means are at least composed of pressure means (34) which can exert a force on the above-mentioned valve disk (23); on/off switches (35) to switch the pressure means (34) in a first or second position, whereby a smaller stop force is exerted on the above-mentioned valve disk (23) in the second position than in the first position; a coupling (36) provided between at least one of the axially slidable pulley halves (4) and the valve disk (23) which exerts a stop force on the valve disk (23) which diminishes as the transmission ratio decreases; and control means (37) which control the switches (35) as a function of the engine torque.
摘要:
1. Method for lubricating and/or cooling a transmission unit, in particular a transmission unit of the type which makes use of a continuously variable transmission (2) with pulleys (5-6) and an endless transmission element (7) provided in between, at least one hydraulic cylinder/piston unit (13) with a pressure chamber (15) which cooperates with the continuously variable transmission (2), and a pressure compensation chamber (23) cooperating with the above-mentioned pressure chamber (15), characterized in that at least part of the hydraulic medium coming out of the pressure compensation chamber (23) is guided back via a number of parts of the transmission unit (1) to be lubricated and/or cooled, so as to provide for the lubrication and/or cooling of these parts.
摘要:
Transmission unit for motor vehicles, in particular a continuously variable transmission which makes use of pulleys (4,5) and an endless transmission element (6) provided in between, characterized in that it has liquid supply means for the supply of cooling and/or lubricating liquid onto the endless transmission element (6) which make it possible for the cooling and/or lubricating liquid to reach the transmission element (6) spread in different places.
摘要:
Transmission unit for motor vehicles, consisting of an input shaft (1); shifting means (2) for selecting the driving direction, which make use of an intermediate toothed wheel (29); a continuous variable driving belt transmission (4) of which the secondary belt pulley (7) is mounted on a shaft (6) which provides for the driving of the wheels via a differential (8); and an oil pump (25); with the characteristic that the primary belt pulley (5) of the variable driving belt transmission (4) can be connected with the shifting means (2) for selecting the driving direction by means of a drive clutch (3) which can be switched on and off, and that the oil pump (25) is driven by means of the aforementioned intermediate toothed wheel (29).
摘要:
Method for regulating a transmission unit for motor vehicles, more particularly for regulating a transmission unit of the type that uses a continuously variable transmission (2) and that comprises at least a primary pulley (3) on an input shaft (4), a secondary pulley (5) on an output shaft (6), an endless transmission element (7) between said two pulleys (3, 5), a first pressure cylinder (8) which operates with the primary pulley (3), and a second pressure cylinder (9) which operates with the secondary pulley (5), whereby the pulleys (3, 5) and the pressure cylinders (8, 9) enable the running radiuses (R1, R2) of the endless transmission element (7) on the pulleys (3, 5) to be altered, and thus also the transmission ratio, characterised in that both the primary and the secondary pressure, or in other words both the pressure in said first pressure cylinder (8) and the pressure in said second cylinder (9), can be regulated by means of a control system, whereby a control mechanism is created which provides for a controlled basic pinching force and a controlled selection force, which can be superimposed both on the primary and on the secondary side of the transmission respectively.