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System and method for reactivating engine cylinders

An engine and cylinder technology, applied in the direction of engine components, combustion engines, engine control, etc., can solve problems such as engine emissions, performance and fuel economy degradation, and camshaft phase can not be adjusted quickly, so as to improve fuel economy and improve engine performance. Performance, the effect of reducing vehicle emissions

Inactive Publication Date: 2017-12-19
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the torque applied to the cams is low, the camshaft phasing will not adjust as quickly as desired
As a result, engine emissions, performance and fuel economy can degrade

Method used

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  • System and method for reactivating engine cylinders
  • System and method for reactivating engine cylinders
  • System and method for reactivating engine cylinders

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Embodiment Construction

[0061] The present description relates to systems and methods for selectively activating and deactivating cylinders and cylinder valves of an internal combustion engine. The engine can be as Figure 1A to Figure 6D Configure and operate as shown. Various methods and predictive operating sequences for engines involving deactivated valves are in Figure 7 to Figure 42 shown in . Different approaches can work together and with Figure 1A to Figure 6D The system shown operates together.

[0062] refer to Figure 1A , an internal combustion engine 10 comprising a plurality of cylinders, one of which is at Figure 1A shown in . Engine 10 is comprised of cylinder head casting 35 and cylinder block 33 which includes combustion chamber 30 and cylinder walls 32 . Piston 36 is positioned therein and reciprocates via a connection with crankshaft 40 . Flywheel 97 and ring gear 99 are coupled to crankshaft 40 . A starter 96 (eg, a low voltage (operating at less than 30 volts) motor) ...

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PUM

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Abstract

The invention relates to a system and method for reactivating engine cylinders. Systems and methods for operating an engine with deactivating valves are presented. In one example, deactivated valves may be reactivated to increase a rate of camshaft phase indexing relative to engine crankshaft position. However, if a desired rate of camshaft indexing is low, the engine cylinders may remain deactivated based on the low rate of desired camshaft indexing.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application Serial No. 62 / 347,815, filed June 9, 2016. The entire content of the above application is hereby incorporated by reference in its entirety for all purposes. technical field [0003] The present description relates to systems and methods for selectively deactivating and reactivating one or more cylinders of an internal combustion engine. The systems and methods may be applied to engines operating poppet valves to control flow into and out of cylinders of the engine. Background technique [0004] The phasing of the engine camshaft can be adjusted relative to the position of the engine crankshaft. Phasing adjustments to the camshafts allow the intake and exhaust valves to overlap and take advantage of internal exhaust gas recirculation (EGR). In addition, camshaft phasing provides delayed intake valve closing, which increases pushback of gases into t...

Claims

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Application Information

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IPC IPC(8): F02D13/06F02D17/02F02D29/02F02D43/00
CPCF02D13/06F02D17/02F02D29/02F02D35/027F02D37/02F02D41/0002F02D41/0007F02D41/0087F02D41/123F02D2250/18F02D17/00F02D13/0219F02D2041/001F02D2041/0012F01L1/181F01L13/0005F01L2001/0476F01L2001/0535F01L2001/0537F01L2001/186F01L2013/001F01L2250/04F01L2305/00F01L2800/00F01L2810/02F02D13/04F02D41/3094Y02T10/40F02D41/26
Inventor C·P·格卢格拉
Owner FORD GLOBAL TECH LLC