Dayco IP Holdings, LLC

Chester E Duffield, Iii

Matthew C Gilmer

David E Fletcher

David Snow

Mitchell Emond

Joseph Dennis

Scott Martin

James H Miller

Anthony Eugene Lannutti

Kevin W Lucka

Kevin Gerard Dutil

Robert J Crist

Donald P Tinsley, Iii

James Kevin Lindstrom

Aaron Diamond

Russell Aach

A breach detection system for an internal combustion engine having a crankcase, an intake manifold, a positive crankcase ventilation valve, a crankcase ventilation tube with a flow control system therein, and a pressure sensor between the flow control system and the crankcase. The flow control system subdivides the crankcase ventilation tube into a plurality of parallel conduits&#x2014;a first conduit having a normally closed check valve that opens under a first preselected pressure drop in a first direction from the air intake to the crankcase, and a second conduit having either a second check valve that opens under a second preselected pressure drop in a second direction opposite the first direction or a restriction profile having a third preselected pressure drop that is the same in both the first and second direction. When the pressure sensor detects no pressure drop there is a breach in the system.

Crankcase ventilation system with constant restriction in the flow direction and free flow in an opposite direction

Check valve inserts define a valve seat for an open position of a check valve and have an outer support seatable in an internal chamber of the check valve and have an inner annular ring spaced radially inward from the outer support by a rib that angles axially toward a central longitudinal axis to position an upper surface of the inner annular ring a distance axially beyond an upper surface of the outer support. Check valves have a housing defining an inlet port, an outlet port, and a chamber in fluid communication with the inlet and outlet ports, have the check valve insert seated with the chamber, and have a seal disc moveable within the chamber between the open position defined by the inner annular ring of the check valve insert and a closed position. The seal disc is translatable in response to a pressure difference across the seal disc.

Check valve insert defining an open position and check valves having same

Three-port latching valves have a housing with a first port, a second port, and a third port in controlled fluid communication with one another by three, individually electronically controllable magnetically latching valves for a combination of five different flow options. Each valve has a solenoid with an armature movable between an open position and a closed position, a poppet valve connected to the armature, a permanent magnet fixedly seated at a position for magnetically latching the armature in the open position, and a spring positioned to bias the poppet valve closed when the armature is in the closed position. The spring has a pre-selected spring rate that mechanically relieves pressure if the spring rate is exceeded. The armature is movable to the open position after a pulse of voltage to the solenoid and is in an unpowered state after translation to either of the open position or the closed position.

Three port, five-way magnetically latching valve for fuel vapor management systems and systems incorporating same

An internal combustion engine having an intake manifold, a compressor in fluid communication with the intake manifold, a charge air cooler in fluid communication with and between the compressor and the intake manifold, a throttle controlling fluid communication between the air charge cooler and the intake manifold, and a condensate collection reservoir that collects condensate from the air charge cooler and is in fluid communication with a suction port of a Venturi device in a bypass loop around the throttle. A motive inlet of the Venturi device is in fluid communication upstream of the throttle and a discharge outlet is in fluid communication downstream of the throttle, and under operating conditions that provide an adequate pressure drop across the Venturi device, the suction port draws condensate from the condensate collection reservoir and introduces the condensate into the intake manifold as a mist.

Charge air cooler drain system

A dual chamber fuel tank protector valve has a transversely oriented divider defining a plurality of apertures for fluid flow between a first port and a second port. Each chamber has a seal disk therein. The first seal disk is normally biased to an open position by a first biasing member. The second seal disk is normally biased to a closed position by a second biasing member having a preselected biasing force set to a preselected pressure differential that allows movement to its open position before the first seal disk moves to its closed position. When the first seal disk and the second seal disk move to their respective closed positions, the direction of movement is toward one another.

Fuel tank protector valve and engine systems having same

Flow control devices herein have a housing defining a plurality of parallel conduits. The first conduit has a normally closed check valve defined to open under a first preselected pressure differential controlling flow through the first conduit in a first direction of flow. The second conduit has a normally neutral check valve defined to open under a second preselected pressure differential in a second direction of flow that is opposite the first direction of flow. The third conduit defines a restriction profile, i.e., has a restrictor, having a third preselected pressure differential. The flow control devices are included as part of an engine system, more specifically a crankcase ventilation breach detection system.

Crankcase ventilation system with a flow control device for on board diagnostics

Zed-type belt tensioners are described that include an arm having a first end rotatable about a first axis to move a second end of the arm into engagement with a belt, a tensioner component coupled to the first end of the arm, and a supplemental force element positioned between the arm and the tensioner component. The second end of the arm while tensioning a belt experiences a hub load applied by the belt and the supplemental force element is positioned at a point to apply a force that counteracts the hub load thereby reducing cocking of the arm. Also described herein are methods of counteracting the hub load using such belt tensioners and methods of assembly of such belt tensioners.

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Warren, MI, United States of America

Chester E Duffield, Iii