Continental Automotive Systems Corporation

Continental Automotive Canada, Inc.

Adrian Ovidiu Crisan

Benjamin Dominick Manton Williams

Robert Douglas Jefford

Paul Douglas Perry

David William Balsdon

David Rene Forgeron

A valve assembly for an air flow system, where the air flow system has a turbocharger unit and a venturi valve member for receiving a portion of the pressurized air from the turbocharger unit, and generating back pressure. The valve assembly includes a bypass switching valve and a bypass check valve. During a first mode of operation, the valve assembly is exposed to vacuum pressure, and the bypass check valve is exposed to the vacuum pressure such that the bypass check valve is placed in a closed position. During a second mode of operation the turbocharger unit is activated, pressurized air flows through the bypass switching valve, and places the bypass check valve in an open position, and the back pressure generated by the venturi valve member and the pressurized air from the turbocharger unit creates a pressure differential in the bypass check valve.

Integrated valve assembly

A system which includes a turbo bypass switching valve (BSV) positioned at a beneficial location as a direct mount on an air box to achieve compliance to OBD hose-off requirement via electronic actuation of the BSV and monitoring of the fuel tank pressure sensor for pressure change. When the turbocharger unit is generating pressurized air, the turbo BSV is open, and vapor is passing through the purge valve, some level of vacuum in the fuel tank is sensed. By closing the BSV, flow through the venturi is reduced, producing both less vacuum and a change in fuel tank pressure. The pressure change does not occur if any of the hoses become disconnected. This results in a simple OBD 'venture hose off' check without additional components.

Turbo bypass switch valve mounting on air box

A vapor management system () includes a sense tube () disposed in a fuel tank (). A differential pressure sensor () has one side connected to the sense tube and another side connected to a vapor cavity so that the pressure sensor can measure a differential pressure (DP) between a volume of the vapor cavity and a volume of the sense tube containing liquid fuel. A temperature sensor () is in the vapor cavity. A processor 1) receives DP and T measurements at certain time intervals to determine the temperature at time zero (T), the differential pressure at time zero (DP), the temperature at a certain time (T), and the differential pressure at a certain time (DP), and 2) when (T&#x2212;T) is greater than a certain value, compares DPto a certain differential pressure value.

Sample tube structure for automotive fuel tank leak detection

A system and method are provided for detecting a leak in an automotive fuel system. The functions of vacuum sensing, vacuum relief (high vacuum relief level) and pressure relief (high pressure relief level) are all performed by a single self-actuated diaphragm-seal valve mechanism.

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Chatham, Canada

Adrian Ovidiu Crisan