Avl Powertrain Engineering, Inc.

Gustav R Johnson

Gary L Hunter

Julian Sherborne

Nicholas Michael Zayan

Darrell Sparks

Gary Hunter

Julian Sherborn

A powertrain system is provided and may include a combustion engine, a crankshaft, and a turbo-compounding system. The combustion engine may include an intake manifold and an exhaust manifold. The crankshaft may be driven by the engine. The turbo-compounding system may be configured to drive the crankshaft and may include a first turbine and a drive system. The first turbine may include an inlet fluidly communicating with the exhaust manifold. The drive system may include an input shaft driven by the first turbine, and an output shaft engaged with the crankshaft. The drive system may be configured to drive the output shaft at more than one drive ratio relative to the input shaft.

Waste heat recovery and boost systems including variable drive mechanisms

A piston may include an outer peripheral surface and a crown. The outer peripheral surface may include first and second openings spaced about and extending through the outer peripheral surface. The crown may include a recess at least partially defined by a first lobe in fluid communication with the first opening and a second lobe in fluid communication with the second opening. Each of the first and second lobes may be recessed relative to an adjacent portion of the recess of the crown.

Opposed piston three nozzle piston bowl design

A waste heat recovery system for an engine is disclosed. In one example, the waste heat recovery system includes an expander, a first heat exchanger system, and a second heat exchanger system. The expander is configured to convert waste heat from a working fluid into mechanical energy. The first heat exchanger system is in fluid communication with the expander, the first heat exchanger system disposed upstream of the expander. The second heat exchanger system is in fluid communication with the expander and is disposed upstream of the expander and arranged in parallel with the first heat exchanger system.

Rankine cycle pump and recuperator design for multiple boiler systems

A cooling system for an internal combustion engine according to the principles of the present disclosure includes an engine block, a compression device, a cooling circuit, a first pump, and a fuel delivery device. The engine block at least partially defines a combustion chamber and a cooling passage. The cooling passage extends through the engine block. The compression device is received in the engine block to partially define the combustion chamber. The compression device is movable within and relative to the engine block. The cooling circuit is in fluid communication with the cooling passage. The first pump is in fluid communication with the cooling circuit and is configured to circulate a fuel through the cooling circuit and the cooling passage. The fuel delivery device is in fluid communication with the cooling circuit and is configured to deliver the fuel to the combustion chamber.

Integrated fuel and cooling circuit for an internal combustion engine

A turbo-compounding system may include a first turbine, a turbocharger, a bypass passageway and a valve. The first turbine may include an inlet in fluid communication with an exhaust manifold and an outlet in fluid communication with a fluid passageway. The first turbine may be drivingly coupled to an engine. The turbocharger includes a first compressor and a second turbine. The first compressor receives an intake fluid at a first pressure and discharges the intake fluid at a second pressure. The second turbine may drive the first compressor and receive exhaust gas from the fluid passageway downstream of the outlet of the first turbine. The bypass passageway may include a first end fluidly coupled with the engine exhaust manifold and a second end fluidly coupled with the fluid passageway downstream from the first turbine and upstream of the second turbine. The valve controls fluid-flow through the bypass passageway.

Engine turbo-compounding system

An opposed piston engine may include a first housing, first and second pistons, and first, second, and third fuel injector nozzles. The first housing may define a first passage extending along a first longitudinal axis. The first and second pistons may be slidably disposed within the first passage. The first, second, and third fuel injector nozzles may be in fluid communication with the first passage. At least one of the first, second, and third fuel injector nozzles may be angularly offset from another one of the first, second, and third fuel injector nozzles by an oblique angle about the first longitudinal axis.

Opposed piston three nozzle combustion chamber design

An engine control system includes first and second control modules. The first control module determines a fuel combustion parameter. The second control module determines a fuel delivery parameter based on the fuel combustion parameter. The fuel combustion parameter includes at least one of (i) a total amount of heat released by a volume of fuel during a combustion cycle and (ii) a rate at which heat is released during the combustion cycle. The fuel delivery parameter includes at least one of (i) a duration of time over which the volume of fuel is delivered to a cylinder, (ii) a time at which a fuel injector starts delivering the volume of fuel to the cylinder, and (iii) a fuel pressure in a fuel rail.

System and method for controlling fuel injection characteristics in an engine

A turbocharger apparatus of an internal combustion engine and method of controlling the same is provided with electrically coupled fully variable turbo-compound capability. The turbocharger includes an exhaust gas turbine and an intake air compressor. A first electric machine coupled to the engine generates electricity and adds power to an output shaft of the engine depending on electricity flow to and from the first electric machine. A second electric machine coupled to the turbine and/or the compressor generates electricity and drives the turbine and/or the compressor depending on electricity flow between the first and the second electric machines. A planetary gearset connects the turbine, the compressor, and the second electric machine, and varies rotational speeds of the turbine, the compressor, and the second electric machine depending on electricity flow between the first and second electric machines to maximize efficiency and power of the engine.

Growing community of inventors

Canton, MI, United States of America

Gustav R Johnson