摘要:
Es wird ein Verfahren zum Ermitteln einer Soll-Drehzahl einer Antriebsmaschine einer Arbeitsmaschine (1) mit einem Stufenlosgetriebe und mit einer Arbeitshydraulik (4) in Abhängigkeit eines Betriebszustandes der Arbeitshydraulik (4) beschrieben. Die Soll-Drehzahl wird ohne Kenntnis des aktuellen Betriebszustandes der Arbeitshydraulik (4) mittels eines Basis-Motordrehzahl-Settings bestimmt, anhand dem Soll- Drehzahlen ermittelt werden, zu den die Arbeitsmaschine mit hoher Produktivität betreibbar ist, während die Soll-Drehzahl bei Kenntnis des Betriebszustandes der Arbeitshydraulik (4) unter Berücksichtigung des Basis-Motordrehzahl-Settings und wenigstens zusätzlich in Abhängigkeit eines Low-Motordrehzahl-Settings und eines High-Motor-Drehzahl-Settings bestimmt wird. Über das Low-Motordrehzahl-Setting alleine werden geringere Soll-Drehzahlen als über das Basis-Motordrehzahl-Setting oder über eine Kombination aus dem Low-Motordrehzahl-Setting und dem Motordrehzahl-Setting bestimmt, während die alleine in Abhängigkeit des High- Motordrehzahl-Settings ermittelten Soll-Drehzahlen größer sind als die anhand des Basis-Motordrehzahl-Settings oder über eine Kombination aus dem Basis- Motordrehzahl-Setting und dem High-Motordrehzahl-Setting bestimmten Soll- Drehzahlen. Ein Motordrehzahl-Setting umfasst jeweils einen Soll-Drehzahlbereich oberhalb eines reziproken Übersetzungsbereiches des Stufen losgetriebes.
摘要:
An engine system uses data associated with at least one operating condition of an engine to set the engine system to an AI mode when the engine is in an SI mode 1) within first operating condition limits, and 2) when a rate of change of a first operating condition is within rate of change limits, maintain the engine system in the SI mode when the engine is outside of first operating condition limits or when the rate of change of the first operating condition is not within rate of change limits, set the engine system to the SI mode when the engine is in the AI mode outside second operating condition limits, and maintain the engine system in the AI mode when the engine is within second operating condition limits, wherein the second operating condition limits are different from the first operating condition limits.
摘要:
The present invention relates to a method and a system for the control of a torque Tq demand requested from an engine in a vehicle, wherein the engine provides a dynamic torque Tq fw in response to said torque Tq demand . Control of the requested torque Tq demand is performed in such a way that the control provides a desired value Tq fw_req for the dynamic torque and/or a desired derivative Tq fw_req for the dynamic torque. This is achieved by basing the control on at least one current value Tq fw_pres for the dynamic torque, on one or several of the desired value Tq fw_req and the desired derivative Tq fw_req for the dynamic torque, and on a total delay time t delay-total elapsing from determination of at least one parameter value, to when a change of said dynamic torque Tq f w based on the determined at least one parameter value, has been effected.
摘要翻译:本发明涉及一种用于控制车辆发动机所要求的扭矩Tq需求的方法和系统,其中发动机响应于所述转矩Tq需求而提供动态转矩Tq fw。 对所要求的扭矩T q要求的控制以这样一种方式执行,使得控制为动态转矩提供期望值Tq fw_req和/或动态转矩的期望导数T f f ref。 这通过将动态转矩的至少一个当前值Tq fw_pres的控制基于用于动态转矩的期望值Tq fw_req和期望导数Tq fw_req中的一个或几个,以及总延迟时间t delay- 从至少一个参数值的确定到基于所确定的至少一个参数值的所述动态转矩Tq fw的变化已经完成。
摘要:
An automatic control apparatus for an engine detects an operation position of a mechanical shift lever for shifting gears of a transmission, automatically stops the engine when a predetermined condition is satisfied in the case where the operation position is at a first specific range, and automatically restarts the engine in the case where, after the operation position is switched from the first specific range to a second specific range while the engine is stopped, the second specific range is maintained for a predetermined time. When the operation position is switched from the first specific range to the second specific range while the engine is stopped, it is determined whether or not the driver has an intention to start the vehicle, and if YES, the predetermined time is set to be shorter than when it is determined that there is no intention to start the vehicle.
摘要:
The invention relates to a method for heating a catalyst. When the engine is started, engine speed is maintain at high rpm. This high rpm is maintained even if the driver shifts the transmission out of neutral, at time (A). Engine speed is lowered if an indication that the driver wishes to drive off is detected, at time (C), e.g. release of the brake pedal. The shaded area shows the additional contribution to catalyst warm up. The high rpm may be disabled if catalyst temperature is high enough or if the vehicle is parked on a slope. The invention also relates to a vehicle carrying out the method.