Engine control apparatus and method for transitioning cylinder operation modes of a multiple cylinder internal combustion engine

A technology of working mode and conversion method, which is applied in the direction of engine control, combustion engine, machine/engine, etc., and can solve the problem of different stop sequence and ignition sequence

Inactive Publication Date: 2012-05-16
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stopping sequence is different from the firing sequence

Method used

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  • Engine control apparatus and method for transitioning cylinder operation modes of a multiple cylinder internal combustion engine
  • Engine control apparatus and method for transitioning cylinder operation modes of a multiple cylinder internal combustion engine
  • Engine control apparatus and method for transitioning cylinder operation modes of a multiple cylinder internal combustion engine

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Embodiment Construction

[0050] figure 1 A control device 1 for an internal combustion engine 19 is shown, which in this embodiment has four cylinders 2 , 3 , 4 , 5 arranged in a straight line as shown. Any one of the cylinders 2, 3, 4, 5 in combination with the reciprocating piston 6 provides a variable volume combustion chamber. Piston 6 is connected to crankshaft 8 by connecting rod 7 so that the reciprocating linear motion of piston 6 is converted via crankshaft 8 into rotational motion through output shaft 9 to drive a transmission of a vehicle, the vehicle and transmission not shown in the figure.

[0051]Each cylinder 2 , 3 , 4 , 5 includes an intake valve 10 , an exhaust valve 11 , a fuel injection valve 12 and a spark plug 13 . In the present embodiment, the internal combustion engine 19 is shown as a spark ignition engine.

[0052] Each fuel injection valve 12 is operated independently via a first control unit 14 and each spark plug 13 is operated independently via a second control unit 15...

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PUM

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Abstract

Engine control apparatus 1 comprises means 16 for deter mining whether or not the engine 19 is operating under decelerating or accelerating conditions. Cylinder control means 14, 15 are provided for deactivating two or more of the plurality of cylinders 2, 3, 4, 5 in a disabling sequence, which is different from the normal firing sequence, if the engine 19 is operated under deceleration operating conditions and for individually reactivating two or more of the plurality of cylinders 2, 3, 4, 5 in a reactivating sequence, which is different from the normal firing sequence, if the engine 19 is operated under acceleration conditions.

Description

technical field [0001] The invention relates to an engine control device and a conversion method between an all-cylinder working mode and a cylinder stop mode of a multi-cylinder internal combustion engine. Background technique [0002] Fuel supply to all cylinders of an internal combustion engine may be interrupted during engine operating mode, commonly referred to as deceleration fuel interruption. US 5,119,781 discloses a method of controlling engine fuel injection to interrupt fuel supply to cylinders during transitions to deceleration fuel interruption. [0003] Deceleration fuel cutoff mode may be initiated when the engine is decelerating, for example when an engine control component such as the throttle valve or accelerator pedal is in a position to idle the engine. The deceleration fuel cutoff mode of engine operation may be used to reduce fuel consumption and maximize engine braking caused by drag or negative torque imposed by engine load. Deceleration fuel cutoff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D17/02F02D43/00
CPCF02B2075/125F02D41/126F02D41/0087F02D17/02F02D2250/21Y02T10/123F02D41/401F02D41/107Y02T10/12
Inventor K·波奇纳E·特罗普舒格
Owner GM GLOBAL TECH OPERATIONS LLC
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