Abstract:
L'invention porte principalement sur un procédé de commande en couple d'un moteur thermique équipé d'un premier régulateur (4), dit régulateur de ralenti, apte à générer un couple de ralenti (Cral) visant à maintenir une consigne de régime de ralenti (Wral) déterminée pour éviter un calage dudit moteur thermique et un deuxième régulateur (6), dit régulateur d'agrément curatif apte à compenser une oscillation de régime du moteur thermique (Wm) en appliquant un couple correctif en opposition de phase avec le régime du moteur thermique (Wm), caractérisé en ce que cas d'activation simultanée du régulateur de ralenti (4) et du régulateur d'agrément curatif (6), ledit procédé comporte l'étape d'atténuer sans annuler, sauf si il existe un risque de calage du moteur thermique, ledit couple correctif produit par ledit régulateur d'agrément curatif (6). L'invention a également pour objet le calculateur moteur correspondant.
Abstract:
The present invention proposes a system for regulation of torque demanded Tq demand from a prime mover of a vehicle, which prime mover is adapted to responding to the torque demanded Tq demand by delivering a dynamic torque Tq fw . This dynamic torque Tq fw is related by a gear ratio i to a dynamic wheel torque Tq wheel which a power train comprising the prime mover is adapted to imparting to at least one tractive wheel of the vehicle. According to the present invention the system is adapted to conducting the regulation of the torque demanded Tq demand in such a way that a difference between the torque demanded Tq demand and the dynamic torque Tq fw is actively limited by employing feedback of the dynamic torque Tq fw (t— Δ t) at an earlier time t— Δt . The torque demanded Tq demand at a time t for the regulation is here limited to a maximum value Tq demand,max which exceeds the dynamic torque Tq f W (t— Δt) at an earlier time t— Δt by an offset value Tq offset max , i.e. Tq demand,max (t) = Tq fw (t - Δ t) + Tq offset>max . The torque demanded Tq demand is thus continuously varied according to the dynamic torque Tq fw , so that power train oscillations in the vehicle are reduced in number and/or magnitude.
Abstract:
An abnormality detection device is mounted on an engine control device that calculates a target load factor by using a target torque, converts the target load factor to a target throttle opening, calculates a target ignition timing by using a target efficiency, and controls an engine based on the target throttle opening and the target ignition timing. In the abnormality detection device, a target efficiency for monitoring is calculated by using the target ignition timing, a target torque for monitoring is calculated by using the target efficiency for monitoring and the target load factor, a torque deviation between the target torque for monitoring and the target torque is calculated, and the presence or absence of an abnormality is detected by using the torque deviation.
Abstract:
L'invention porte principalement sur un procédé de filtrage d'un couple de consigne moteur lors d'un passage des jeux moteur comportant les étapes suivantes: - déterminer (101 ) un couple de consigne moteur, - détecter (102) un instant d'entrée (t1 ) dans les jeux moteur et un instant (t2) de sortie des jeux moteur définissant une zone (Z) de passage des jeux moteur, - filtrer (103) le couple de consigne moteur (Ce) dans la zone (Z) de passage des jeux moteur, et - appliquer (104) si besoin un couple de correction (Ccor) en opposition de phase avec un régime (Wm) du moteur thermique. Conformément à l'invention, l'instant d'entrée (t1 ) dans les jeux moteur est détecté à partir d'une variation du régime (Wm) du moteur thermique ou d'une variation du couple de correction (Ccor).
Abstract:
A method of operating an internal combustion engine with gaseous fuel includes providing fuel to a plurality of cylinders with both central point injection and multipoint injection. Central point injection, which provides good air/fuel mixing, may provide a majority of steady-state fueling, and multipoint injection is used for supplementing the central point injection during steady-state and for providing rapid transient response to load changes.
Abstract:
When an engine is to be started, operation of the engine is started with injection of fuel from a port fuel injection valve, without injecting fuel from an in-cylinder fuel injection valve (S1OO). If a gear rattling noise is produced (S11O), the engine is operated with fuel injection, from the in-cylinder fuel injection valve, without injecting fuel from the port fuel injection valve (S120). This restrains occurrence of a gear rattling noise.
Abstract:
The present invention is related to a vehicle provided with operation selection mode. In particular, the present invention is related to a common rail electronically controlled vehicle provided with operation selection mode wherein the user can select either of the power mode and the economy mode of vehicle operation depending on the road - load conditions. The system of the present invention provides a system to enable selection of power mode operation for power conscious driving requirement or economy mode operation for fuel conscious driving option obviating the use of additional interface devices between engine and engine control unit.
Abstract:
The present invention is related to a vehicle provided with operation selection mode. In particular, the present invention is related to a common rail electronically controlled vehicle provided with operation selection mode wherein the user can select either of the power mode and the economy mode of vehicle operation depending on the road - load conditions. The system of the present invention provides a system to enable selection of power mode operation for power conscious driving requirement or economy mode operation for fuel conscious driving option obviating the use of additional interface devices between engine and engine control unit.
Abstract:
Methods and systems for real-time engine load control (RTLC) for electronically controlled engines in a transport refrigeration system (TRS) are provided. In particular, a RTLC system is provided to control an electronically controlled engine for the TRS in order to maximize temperature control of the TRS, while preventing engine shut down due to a TRS load demand that exceeds the engine's horsepower output capability. The RTLC system includes an engine control unit (ECU) connected to a TRS controller. TRS controller includes an ECU data processing component, a load control component, an ETV control component, a TRS load demand component and a temperature control and TRS protection component.