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Drive controller for hybrid vehicles

  • US 8,280,571 B2
  • Filed: 11/26/2008
  • Issued: 10/02/2012
  • Est. Priority Date: 11/26/2007
  • Status: Expired due to Fees
First Claim
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1. A drive controller for hybrid vehicles, the hybrid vehicle comprising:

  • a diesel engine mounted on a vehicle;

    a motor generator connected in series with said diesel engine which is able to assist a driving force of said diesel engine;

    an automatic clutch mechanism connected between said diesel engine and said motor generator which is able to engage/disengage a transmission of the driving force between said diesel engine and said motor generator;

    an automatic transmission that varies a rotation speed of said motor generator or said diesel engine;

    a filter for collecting particulates in exhaust gas from said diesel engine; and

    said drive controller for controlling operations of said diesel engine, said motor generator, said automatic clutch mechanism and said automatic transmission, whereinsaid drive controller operates in such a way that,for starting off of the vehicle,the vehicle is made to start off only by the driving force from said motor generator (2) with said automatic clutch mechanism (3) disengaged, and said automatic clutch mechanism is engaged after an engine rotational speed synchronization control is carried out, by which an engine rotational speed (Ne) is controlled to be synchronized to a target engine rotational speed (Nt′

    ) calculated on a basis of a clutch rotational speed (Nt), on a condition that a difference between the target engine rotational speed (Nt′

    ) and the engine rotational speed (Ne) is equal to or larger than a predetermined synchronization-judgement threshold when the clutch rotational speed (Nt) reaches a predetermined rotational speed (N3), andfor regenerating said filter,a fast-idle control by which an idling speed of said diesel engine is kept higher than that at which non-regeneration of said filter is carried out while the vehicle stops and when a vehicle speed is detected, and the predetermined rotational speed (N3) is set at a rotational speed (N2) which is higher than that at non-regeneration of said filter.

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