摘要:
A direct injection Diesel engine for motor-vehicles, with small displacement, is described, which comprises a number of cylinders in line each provided with two intake valves and two exhaust valves driven by two cam-shafts arranged in the cylinder head, by means of rocker arms. The arrangement of the intake apertures (2, 3) and the exhaust apertures (4, 5) is such that the injector device can be housed centrally therebetween and the pre-heating glow-plug can be housed on one side, between one intake aperture and one exhaust aperture, while the overall dimensions of the engine are greatly reduced and intake and exhaust conduits (6, 7, 8) are formed which ensure optimum performance of the engine and a low fuel consumption.
摘要:
A powertrain control system for management and supervision of engine and servo-assisted gearbox control modules is arranged for determining the power to be applied to the drive wheels of the vehicle as a function of signals indicative of commands imparted by the driver, of the engine and gearbox state parameters and of possible requirements from the engine and gearbox control modules and supplementary on board vehicle traction/drive control systems; calculating data indicative of the torque to be delivered at the engine drive shaft, the torque transmissible by the clutch and the required transmission ratio, as a function of the determined value of the power to be applied to the drive wheels, of the state parameters and of the requirements of the engine and gearbox control modules and the traction/drive control systems; and transmitting the calculated data as signals to the engine and gearbox control modules.
摘要:
A powertrain control system is described for a motor vehicle provided with at least one engine and a gearbox of servo-assisted type, connectable to the drive shaft of the engine (ICE) via at least one servo-controlled clutch, to which are associated respective control modules arranged to perform an automatic control procedure for control of the traction as a function of signals or data indicative of commands imparted by a motor vehicle driver, and predetermined state parameters of the engine and the gearbox; the system including a module for management and supervision of the said control modules, arranged to manage the powertrain of the vehicle, and in particular to: determine in a predetermined manner, the power to be applied to the drive wheels of the vehicle as a function of signals or data indicative of commands imparted by the driver, of state parameters and of possible requirements from the control modules and/or supplementary on board vehicle traction/drive control systems; calculate, as a function of the determined value of the power to be applied to the drive wheels, of the state parameters and of the requirements of the control modules and the traction/drive control systems, the transmission ratio to use at the gearbox, the torque transmissible by the clutch of the gearbox and the torque required at the engine drive shaft for each operative condition of the gearbox and transmit to the control modules respective signals or data indicative of the torque to be delivered at the engine drive shaft, the torque transmissible by the clutch and the required transmission ratio.