公开(公告)号：US20040002809A1

公开(公告)日：2004-01-01

申请号：US10419243

申请日：2003-04-21

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Massimiliano Maira ,  Francesco Richard

IPC: F01L009/02

CPC classification number: F02D41/008 ,  F01L9/025 ,  F01L2001/34446 ,  F01L2103/01 ,  F01L2800/00 ,  F01L2800/13 ,  F02D41/0002 ,  F02D41/0085 ,  F02D41/18 ,  F02D2041/001 ,  Y02T10/18 ,  Y02T10/42

Abstract: In a multi-cylinder internal combustion engine, equipped with an electronically controlled hydraulic system for the variable operation of the engine's inlet valves, an indicator of the differences in the amount of air aspirated by the cylinders of the engine during the respective induction phase is provided and said system controls the various inlet valves of the engine in a differentiated manner, varying the time and/or opening travel for the purpose of minimizing the differences between the amounts of air aspirated by the various cylinders of the engine.

公开(公告)号：US20030034006A1

公开(公告)日：2003-02-20

申请号：US10205168

申请日：2002-07-25

Applicant: C.R.F. SOCIETA' CONSORTILE PER AZIONI

Inventor： Francesco Richard ,  Marco Tonetti

IPC: F02D031/00

CPC classification number: F02D31/001 ,  F02D41/1401 ,  F02D2041/1416 ,  F02D2200/1004

Abstract: There is described a control device for controlling the speed of an engine of a vehicle, and having a tracer block which receives a target engine speed indicating the desired engine speed, and a maximum engine torque, and supplies a reference engine speed indicating the behaviour of the engine speed during a transient speed state towards the target engine speed, and an open-loop torque indicating the drive torque which must be produced by the engine during the transient speed state for the engine speed to follow the reference engine speed; an observer block which receives a measured engine speed indicating the engine speed, and a combustion torque indicating the drive torque generated by fuel combustion, and supplies an observed engine speed representing an estimate of engine speed made on the basis of a system model and as a function of the combustion torque and the measured engine speed, and an observed resisting torque representing an estimate of the total resisting torque acting on the drive shaft of the engine and made as a function of the observed engine speed and the measured engine speed; and a controller block which receives the open-loop torque, the reference engine speed, the observed engine speed, and the observed resisting torque, and supplies the combustion torque; the controller block controlling the engine so that the drive torque generated by fuel combustion equals the combustion torque.