Abstract:
A method of controlling a variable geometry turbocharger (502) includes the steps of determining an engine start of operation (402), initiating a timer (408), and commanding an open position (412) for the vanes of the variable geometry turbocharger (502). The open position (412) may be maintained for a predetermined time (t ), after which, normal operation may resume (406).
Abstract:
An oxygen sensor is mounted in an exhaust path of an internal combustion engine. The status of an exhaust gas is detected in accordance with the output of the oxygen sensor. The oxygen sensor incorporates a heater for heating an element of the sensor. In a region in which the temperature of the sensor element is below 300°C, an adsorbable species becomes adsorbed. In a region in which the exhaust pipe temperature is above 80°C, the adsorbable species becomes adsorbed remarkably. Power supply control is continuously exercised over the heater so as to maintain the sensor element at a temperature of 300°C or higher until the exhaust pipe temperature drops below 80°C after an internal combustion engine stop. The power supply to the heater is shut off after the exhaust pipe temperature drops below 80°C.
Abstract:
본 공개에 따른 DPF 재생시 엔진 토크 제어 방법은 DPF 재생 조건을 보정하기 위한 매개변수로 기어펌프 및 메인 유압펌프의 출력을 검출하는 단계, 상기 기어펌프 또는 메인 유압펌프의 유량을 증가시키는 단계, 상기 기어펌프 또는 메인 유압펌프의 유량 증가에 따라 엔진 토크 값이 미리 설정된 목표 엔진 토크값에 도달하도록 제어하는 단계, 엔진 토크 값이 미리 설정된 목표 엔진 토크 값에 도달하는 경우 DPF 재생을 시작하는 단계, DPF 재생 동안 상기 목표 엔진 토크값에 기반하여 엔진 회전수가 증가되는 단계 및 배기가스의 온도가 미리 설정된 목표 DPF 재생 온도에 도달할 때까지 DPF 재생을 수행하는 단계를 포함한다.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren und eine Einrichtung zum Betreiben bzw. Betrieb eines Kraftstoffzumesssystems einer Brennkraftmaschine insbesondere eines Kraftfahrzeugs, und wobei insbesondere vorgesehen ist, dass wenigstens eine Betriebsgröße der Brennkraftmaschine erfasst wird (100), dass anhand der wenigstens einen erfassten Betriebsgröße ein dynamischer Betriebszustand der Brennkraftmaschine erkannt wird (105), und dass bei einem erkannten dynamischen Betriebszustand der Brennkraftmaschine unter Berücksichtigung der Effizienz eines NOx-AGN-Systems (115) ein dynamischer Korrektureingriff an dem Kraftstoffzumesssystem der Brennkraftmaschine vorgenommen wird (130).
Abstract:
At the time of an engine start while the vehicle is driving, when a required vehicle driving force (TRQ) is smaller than or equal to a predetermined value (TRQth), an electronic control unit (20) estimates that the degree of deformation of a mount (11) is smaller than or equal to a predetermined degree and sets a second-cycle fuel injection amount (Q2) so as to be larger. than a first-cycle fuel injection, amount (Ql) at the time of the engine start. On the other hand, when the required vehicle driving force (TRQ) is larger than the predetermined value (TRQth), the electronic control unit (20) estimates that the degree of deformation of the mount (11) is larger than the predetermined degree and sets the first-cycle fuel injection amount (Ql) so as to be larger than the second-cycle fuel injection amount (Q2) at the time of the engine start.
Abstract:
At the time of an engine start while the vehicle is driving, when a required vehicle driving force (TRQ) is smaller than or equal to a predetermined value (TRQth), an electronic control unit (20) estimates that the degree of deformation of a mount (11) is smaller than or equal to a predetermined degree and sets a second-cycle fuel injection amount (Q2) so as to be larger. than a first-cycle fuel injection, amount (Ql) at the time of the engine start. On the other hand, when the required vehicle driving force (TRQ) is larger than the predetermined value (TRQth), the electronic control unit (20) estimates that the degree of deformation of the mount (11) is larger than the predetermined degree and sets the first-cycle fuel injection amount (Ql) so as to be larger than the second-cycle fuel injection amount (Q2) at the time of the engine start.
Abstract:
A exhaust catalyst temperature estimating apparatus is provided for estimating a exhaust catalyst temperature of a exhaust catalyst in which a catalyst is loaded on a support and arranged in an exhaust system of an internal combustion engine. The exhaust catalyst temperature estimating apparatus estimates the exhaust catalyst temperature using a first model formula to calculate a current exhaust catalyst temperature of the exhaust catalyst based on a parameter corresponding to a current exhaust gas status. The first model formula is empirically determined such that a exhaust catalyst temperature that excludes heat generated by a chemical reaction is calculated for the parameter by using the support prior to being loaded with the catalyst, or is a physical formula of the support prior to being loaded with the catalyst such that a exhaust catalyst temperature excludes heat generated by a chemical reaction is calculated for the parameter.
Abstract:
Verfahren zur Bestimmung einer Einspritzzeit Ti clc einer Kraftstoffmenge MFF SP einer Brennkraftmaschine eines Kraftfahrzeugs mit Startoptimierung. Zur Berechnung der Einspritzzeit TI_CLC wird der mittlere Kompressionsdruck während des Einspritzvorgangs in Abhängigkeit von dem Drehwinkel Δα und der Stoppposition α stopp der Brennkraftmaschine berechnet.