Abstract: A heat recovery system for an engine is provided herein. According to one approach, the heat recovery system includes an upstream portion that circumferentially wraps around an outlet of an exhaust manifold. Further, the heat recovery system includes a downstream portion in direct surface contact with a top exterior surface and a bottom exterior surface of a plurality of runners of the exhaust manifold.

Abstract: An engine system comprises a first turbocharger including a first wastegate, first wastegate actuator, and first turbocharger sensor, a second turbocharger including a second wastegate, second wastegate actuator, and second turbocharger sensor, and a controller configured to adjust the first wastegate actuator so that a parameter of the first turbocharger matches a parameter of the second turbocharger, based on output from the first and second turbocharger sensors. In this way, turbocharger output between the two turbochargers may be balanced.

Abstract: A system including a turbocharger, comprising a turbocharger bearing housing supporting a turbocharger drive shaft; an oil drain including an inlet in fluidic communication with the turbocharger bearing housing and an outlet in fluidic communication with an oil sump; and a coolant jacket enveloping the oil drain. The coolant jacket envelopes the oil drain and is positioned to provide coolant to the turbocharger bearing housing and draw heat from the oil draining through the oil drain to prevent coking of hot oil within the oil drain.

Abstract: A system or method for controlling a multiple cylinder internal combustion engine operable in a reduced displacement mode with at least one valve or cylinder selectively deactivated include monitoring valve operation by analyzing camshaft position to detect valve operation inconsistent with a current cylinder state (activated or deactivated) and controlling the engine in response to detecting the inconsistent operation. The camshaft position may be used to produce a surrogate signal indicative of intake/exhaust valve lift generated using camshaft sensor tooth deviation relative to an expected or reference tooth position for a corresponding crankshaft position and compared to a corresponding threshold. The surrogate signal indicative of valve lift may also be generated by pattern matching or correlation of one or more reference tooth position patterns to a measured or inferred tooth position pattern.

Abstract: An engine receiving boost from a supercharger and/or a turbocharger compressor is provided, along with methods for its operation. The engine may include inline cylinders arranged on an engine block and an integrated exhaust manifold (IEM), where exhaust flow from inner cylinders is kept separate from exhaust flow from outer cylinders within the IEM and where exhaust flow from the inner cylinders but not the outer cylinders flows through a turbine of the turbocharger. The supercharger and turbocharger compressor may be arranged in parallel upstream of an intake manifold of the engine, and throttles upstream of each of the supercharger and compressor may be controlled to direct intake air through one or both of the supercharger and the compressor based on engine operating conditions.

Abstract: Embodiments for a charge air cooler are provided. In one example, an engine method comprises during a first mode, decreasing a volume of a charge air cooler in response to a compressor operation upstream of the charge air cooler. In this way, compressor surge may be prevented.

Abstract: An engine is provided. The engine includes a piston operable to reciprocate in a cylinder, a crankshaft rotatably coupled to the piston, and a supercharger rotatably coupled to the crankshaft. The supercharger has an unequal distribution of mass along a longitudinal plane of the supercharger to provide a rotational counterbalance to reduce engine imbalance.

Abstract: Methods and systems are provided for reducing turbo lag by directing intake air from an intake manifold to an exhaust manifold. The intake air may be directed via an EGR passage by opening an EGR valve or by may be directed via engine cylinders by increasing positive valve overlap. Amounts of air directed via external EGR and air directed via positive valve overlap are based on engine operating conditions.

Abstract: Methods and systems are provided for raising an exhaust temperature to spin a turbocharger turbine and reduce turbo-lag. Pressurized air is discharged from a boost reservoir into an intake manifold while spark retard is increased to expedite exhaust heating while also increasing a net combustion torque. By expediting turbine spin-up in response to a tip-in, turbo-lag is reduced and engine performance is improved.

Abstract: Methods and systems are provided for reducing turbo lag in a boosted engine. A boost reservoir coupled to the engine may be charged with compressed intake air and/or combusted exhaust gas. The pressurized charge may then be discharged during a tip-in to either the intake or the exhaust manifold.

Abstract: Methods and systems are provided for reducing turbo lag in a boosted engine. A boost reservoir coupled to the engine may be charged with compressed intake air and/or combusted exhaust gas. The pressurized charge may then be discharged during a tip-in to either the intake or the exhaust manifold.

Abstract: A turbocharger for a motor vehicle. The turbocharger includes a compressor mechanically coupled to a turbine. The wastegate of the turbine includes a valve head matched to a valve seat. The valve head is retained at one end of an actuator arm. A resilient spacer is arranged between the valve head and the actuator arm. The resilient spacer is configured to forcibly separate the valve head from the actuator arm when the valve head is unseated.

Abstract: A heat recovery system for an engine is provided herein. According to one approach, the heat recovery system includes an upstream portion that circumferentially wraps around an outlet of an exhaust manifold. Further, the heat recovery system includes a downstream portion in direct surface contact with a top exterior surface and a bottom exterior surface of a plurality of runners of the exhaust manifold.

Abstract: A turbine is provided. The turbine includes a housing radially extending around a turbine rotor including a first piece defining a portion of a first scroll passage boundary and a second piece having an interface wall contiguous with an interface wall of the first piece, the second piece coupled to the first piece and including a divider defining another portion of the first scroll passage boundary and a portion of a second scroll passage boundary.

Abstract: An approach for controlling a turbocharger bypass valve is disclosed. In one example, the turbocharger bypass valve is opened during engine cold start conditions to reduce turbocharger speed. The approach may reduce noise produced by the turbocharger during engine start and warm-up.

Abstract: A cast exhaust manifold for an engine is disclosed that is fastened to the engine by a number of independent flanges between each pair of which a spacer is positioned to produce an interference fit when the exhaust manifold is at ambient temperature. The use of independent flanges allow the exhaust manifold to expand when heated without creating high levels of internal stress and the spacers prevent undue distortion of the exhaust manifold when the exhaust manifold cools.

Abstract: A system or method for controlling a multiple cylinder internal combustion engine operable in a reduced displacement mode with at least one valve or cylinder selectively deactivated include monitoring valve operation by analyzing camshaft position to detect valve operation inconsistent with a current cylinder state (activated or deactivated) and controlling the engine in response to detecting the inconsistent operation. The camshaft position may be used to produce a surrogate signal indicative of intake/exhaust valve lift generated using camshaft sensor tooth deviation relative to an expected or reference tooth position for a corresponding crankshaft position and compared to a corresponding threshold. The surrogate signal indicative of valve lift may also be generated by pattern matching or correlation of one or more reference tooth position patterns to a measured or inferred tooth position pattern.

Abstract: A portable system for display storage and use where at least a first and second display can be stored in the portable system and where the portable system includes supporting structures for arranging multiple displays in a viewing configuration. The portable system includes a housing and first and second displays stored in the housing, where the first display is coupled to a movable supporting member operable to move the displays between a stowed and a viewing position. The displays are adapted with corresponding mounts arranged along a peripheral edge of each display such that the displays may be coupled via the corresponding mounts. Housing mounts sized to engage the corresponding mounts on the second display may be directly or indirectly coupled to the housing and may be used to secure the second display within the housing during transport.

Abstract: A system or method for controlling a multiple cylinder internal combustion engine operable in a reduced displacement mode with at least one valve or cylinder selectively deactivated include monitoring valve operation by analyzing camshaft position to detect valve operation inconsistent with a current cylinder state (activated or deactivated) and controlling the engine in response to detecting the inconsistent operation. The camshaft position may be used to produce a surrogate signal indicative of intake/exhaust valve lift generated using camshaft sensor tooth deviation relative to an expected or reference tooth position for a corresponding crankshaft position and compared to a corresponding threshold. The surrogate signal indicative of valve lift may also be generated by pattern matching or correlation of one or more reference tooth position patterns to a measured or inferred tooth position pattern.

Abstract: A valve in an engine exhaust system is disclosed. The valve can improve engine operation and reduce engine component degradation during cold engine starting. The valve may also be configured to provide different levels of restriction to exhaust gases flowing to a turbocharger turbine.