Variable displacement

A technology for exhaust valves and cylinders, which is applied to engine components, engine control, machines/engines, etc., and can solve problems such as not applicable to compression ignition engines

Inactive Publication Date: 2014-01-22
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, changes in ignition timing, cam timing and throttle position are generally not suitable for compression ignition engines, especially diesel engines

Method used

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  • Variable displacement
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Embodiment Construction

[0045]Embodiments of the invention are described below in which systems and methods provide a smooth and substantially seamless transition from a situation where all cylinders of the engine are running to a situation where the engine is running with a reduced number of cylinders, that is, when one or more cylinders and associated valves are deactivated. transition.

[0046] figure 1 An example implementation of a combustion chamber or cylinder of internal combustion engine 10 is described. Engine 10 may receive control parameters from control systems, including controller 12 , and input from a vehicle operator 130 via input device 132 . In this example, input device 132 includes an accelerator pedal and a pedal position sensor 134 for generating a proportional pedal position signal PP. Cylinder (also referred to herein as “combustion chamber”) 14 of engine 10 may include combustion chamber walls 136 with piston 138 positioned therein. Piston 138 may be coupled to crankshaft...

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Abstract

The present invention relates to a variable displacement. Enable all exhaust valves, intake valve and the cylinder from the disabled state of a multi-cylinder engine exhaust valve, intake valve and the intake valve and the exhaust valve of the cylinder is connected to a method and system. Said method comprising the following steps: a) to increase the first set of multi-cylinder engine cylinder to reduce fuel delivery to the multi-cylinder engine and a second group of cylinders of the fuel delivery volume of the second group of cylinders until the fuel delivery is substantially zero; b) sent to the second group of cylinders with a fuel volume is close to zero, disabling, and the second group of cylinders connected to the intake valve and the exhaust valve; and c) adjusting the fuel delivery of the first cylinder group in order to maintain the basic the engine output torque constant level.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to UK Patent Application No. 1211562.2 filed 29 June 2012, the entire contents of which are hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to variable displacement in automotive engines, wherein the variable displacement includes deactivating one or more cylinders. In particular, the present invention relates to a substantially seamless transition from an engine state with all cylinders activated to an engine state with one or more cylinders deactivated or deactivated, and vice versa. Background technique [0004] An example of variable displacement in automotive technology is the deactivation of one or more cylinders in a multi-cylinder engine. Cylinder deactivation is used to reduce fuel consumption, emissions and increase exhaust temperatures of internal combustion engines, especially during light load operation. [0005] I...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F02D17/02
CPCY02T10/18F01L13/0005F02D13/06Y02T10/12F02D17/02
InventorT·J·鲍曼A·D·斯卡里斯布雷克I·G·派格
OwnerFORD GLOBAL TECH LLC