International Engine Intellectual Property Company, LLC

Paul A Wieshuber

James T Beaucaire

Michael A Majewski

Paul Laurence Berke

David V Rodgers

Disclosed herein are systems and methods, implementable in a vehicle equipped with adaptive cruise control, for maintaining in a subject vehicle substantially constant following distance relative to a preceding target vehicle where there has been a change in slope of a surface on which the subject vehicle is travelling and/or where pitch of the subject vehicle has changed. Systems and methods disclosed herein may maintain such substantially constant following distance by managing engine torque. Such engine torque management effective for maintaining substantially constant following distance relative to a preceding target vehicle, notwithstanding change in driving surface slope and/or change in pitch of the subject vehicle, may be realized, according to the subject vehicle's torque map, based on data received into the subject vehicle's electronic control unit through sensors for detecting surface slope and sensors for detecting vehicle pitch, which may be located on the subject vehicle.

Systems and methods for managing diesel-powered vehicle following distance

A regeneration disable control system () of a vehicle having a power take off device () that is run off a motor () which is powered by at least one battery (), and an engine () for recharging the at least one battery and for regenerating a diesel particulate filter (), includes a hybrid controller (). The hybrid controller () sends a signal to an engine controller () to indicate whether hybrid-PTO mode is enabled. If the hybrid-PTO mode is enabled, the engine controller () determines whether regeneration of the diesel particulate filter () is required. If regeneration is required, the engine controller () sends a signal to a regeneration inhibitor () to disable the engine () from initiating a regeneration event.

System for disabling diesel particulate filter regeneration during electric operation

The method for regeneration of a diesel particulate filter of a vehicle equipped with a hybrid engine, wherein the temperature of the exhaust exiting the diesel engine is increased above a predetermined level by increasing load thereon, through optimization of interaction between the diesel particulate filter aftertreatment system and the hybrid engine control through messaging via a communication bus is disclosed. The load on the engine may be increased with or without the assistance of the electric motor/generator of the hybrid engine, and will not affect required acceleration/deceleration of the vehicle.

Method for diesel particulate filter regeneration in a vehicle equipped with a hybrid engine background of the invention

A PI control strategy controls engine speed to an engine speed set-point. A proportional map () is populated with data values to be used in calculating the P component of the strategy. An integral map () is populated with data values to be used in calculating the I component. Each data value in the maps is correlated with a speed data value representing engine speed (N) and a speed error data value representing the difference between engine speed and engine speed set-point (N_DIF_MAX_LIM). Values for proportional and integral components are selected from the respective maps by processing current engine speed data and current engine speed error data. The strategy uses the values from the maps for controlling engine speed to the speed set-point. Data values from other maps (and; orand) modify the selected values from the proportional and integral maps () for transmission type, transmission gear, and engine temperature.

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River Grove, IL, United States of America

Paul A Wieshuber