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A method of inhibiting stop-start control using gear selector position

A technology of automatic starting and engine, which is applied in the direction of engine starting, engine motor starting, mechanical equipment, etc., which can solve problems such as error, learning is not executed correctly, learning cannot be updated, etc., and achieve the effect of avoiding unsafe operation

Active Publication Date: 2010-06-23
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This complicates calibrating fixed thresholds to determine the boundaries of any neutral window or in-gear zones that are valid for all transmissions
While it is possible to do some form of transmission-line zero-offset learning or vehicle-line zero-offset learning to learn the difference in the transmission's neutral park position, the process introduces risk, i.e. the learning may not be performed correctly, or when the transmission is changed in use, the learning cannot be updated and thus introduce errors in the learned offset
This can have serious consequences, namely unintended vehicle movement during stop-start maneuvers and must therefore be avoided

Method used

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  • A method of inhibiting stop-start control using gear selector position
  • A method of inhibiting stop-start control using gear selector position
  • A method of inhibiting stop-start control using gear selector position

Examples

Experimental program
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Embodiment Construction

[0047] first reference Figure 1-5 , which shows a micro-hybrid motor vehicle 1 having an engine 2 drivingly connected to a manual gearbox / transmission 3 via a clutch (not shown). An electronic controller 4 is provided to control the operation of the engine 2 and includes a stop-start controller 6 for automatically stopping and starting the engine 2 and a transmission status module 5 for determining the operating status of the transmission 3 .

[0048] The electronic controller 4 is arranged to receive a number of inputs or signals from sensors 9 including engine speed from an engine speed sensor, vehicle speed from a vehicle speed sensor, clutch pedal position from a pedal sensor, accelerator pedal position from a pedal sensor, One or more of the brake pedal position from pedal sensors, and may receive information about other components on the vehicle, such as the state of charge of the battery (not shown) and the operating state of the air conditioning unit (not shown).

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PUM

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Abstract

The invention discloses a method and a device for controlling automatic starting and stopping of an engine of a micro hybrid vehicle. The method reduces a risk of unintended movement of the micro-hybrid vehicle (1) due to erroneous transmission state sensor (7). An apparatus for controlling automatic starting and stopping of an engine is also disclosed, the apparatus comprises a transmission state module which receives a signal from the senor (7) and provides an output to a stop-start controller to inhibit stop-starting if the sensor (7) output is confirmed not to be valid for either or both odd and even gear selector positions.

Description

technical field [0001] The present invention relates to methods for controlling automatic starting and stopping of a vehicle engine, and in particular to determining whether output from a transmission state sensor used to determine the engagement state of a manual transmission fitted to a micro-hybrid vehicle is authentic. Background technique [0002] It is known that micro-hybrid technology fitted to manual transmission vehicles makes it possible to reduce fuel consumption by invoking automatic engine stop and start when the vehicle is stationary. Different engine shutdown and restart strategies are available, such as stop in neutral (SIN) and stop in gear (SIG). In SIN and SIG configurations, there are situations where a reliable signal indicating that the transmission is in neutral is required. This signal is used by the engine management system stop-start logic as a condition to determine whether to allow engine shutdown or restart. This is a safety critical requireme...

Claims

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Application Information

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IPC IPC(8): F02D29/02
CPCF02D41/222Y02T10/48F02N11/103F02N11/0818Y02T10/40B60W10/06B60W30/18018B60W50/045F02N11/0814F16H59/044F16H61/12
Inventor T·P·彼得里迪斯I·哈莱罗恩P·G·布里托
Owner FORD GLOBAL TECH LLC
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