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.

公开(公告)号：US20030033800A1

公开(公告)日：2003-02-20

申请号：US10211170

申请日：2002-08-01

Applicant: C.R.F. Societa' Consortile Per Azioni

Inventor： Marco Tonetti ,  Giovanni Maria Rossi Sebastiano ,  Maurizio Mugnaini ,  Pierluigi Rellecati

IPC: F01N003/00 ,  F01N003/02

CPC classification number: F02D41/1448 ,  F02D41/0065 ,  F02D41/027 ,  F02D41/029 ,  F02D41/08 ,  F02D41/1446 ,  F02D41/403 ,  F02D41/405 ,  F02D2041/0067 ,  F02D2200/0406 ,  F02D2200/0602 ,  F02D2250/11 ,  F02P19/026 ,  Y02T10/44

Abstract: A method of initiating regeneration of a particulate filter for a diesel engine having a common rail injection system permitting, at each engine cycle and in each cylinder of the engine, a fuel injection strategy performing one or more of the following injections: a main injection; a first pre-injection preceding the main injection and performed at the compression stroke; a second pre-injection preceding the main injection and following the first pre-injection; a first post-injection following the main injection; and a second post-injection following the first post-injection and performed at the exhaust stroke; the second pre-injection and the first post-injection being performed close enough to the main injection to participate, together with the main injection, in the actual fuel combustion phase. The method of initiating regeneration of the particulate filter provides for implementing, at each engine cycle and in each cylinder of the engine, a fuel injection strategy wherein one or more of the first and second pre-injection, the main injection, and the first and second post-injection are performed, and wherein the timing of one or more of the injections performed is varied with respect to the timing of the injections

Abstract translation: 一种用于柴油发动机的微粒过滤器的再生方法，所述柴油发动机具有共轨喷射系统，该共轨喷射系统允许在发动机的每个发动机循环和每个气缸中执行执行以下喷射中的一个或多个的喷射燃料：主喷射; 在主喷射之前的第一预喷射并且在压缩冲程处执行; 在主喷射之前和第一次预喷射之后的第二预喷射; 主喷射后的第一次后喷射; 以及在所述第一后喷射之后的第二后喷射并在所述排气冲程处执行; 执行第二预喷射和第一后喷射足够接近主喷射以与主喷射一起参与实际的燃料燃烧阶段。 引发颗粒过滤器的再生的方法提供了在发动机的每个发动机循环和每个气缸中实施燃料喷射策略，其中第一和第二预喷射，主喷射以及第一和第二预喷射， 执行第二次后注射，并且其中执行的一次或多次注射的定时相对于注射的定时而变化