Patent ID: 9447754
Filing Date: 2016-09-20
CPC Classification: F02B,F02M,Y02T

Claim Text:
1. An internal combustion 4-cycle engine system comprising: an internal combustion engine comprising a plurality of combustion cylinders comprising a first combustion cylinder, a second combustion cylinder, and a third combustion cylinder, wherein each combustion cylinder of the plurality of combustion cylinders comprises an exhaust valve through which combustion cylinder exhaust gases are discharged during operation of the internal combustion engine; an intake air system configured to supply combustion air to each of the plurality of combustion cylinders; an engine exhaust system configured to receive combustion cylinder exhaust gases; a plurality of low rotational inertia turbochargers comprising a first turbocharger, a second turbocharger and a third turbocharger, each turbocharger in the plurality of turbochargers comprising: an engine control unit configured to switch internal combustion engine system operation between a first mode and a second mode; wherein, in the first mode, the first turbocharger compressor outlet is in fluid communication with the second turbocharger compressor inlet, and further wherein the second turbocharger compressor outlet is in fluid communication with the third turbocharger compressor inlet; and further wherein, in the second mode, each turbocharger compressor outlet is in direct fluid communication with the intake air system; further wherein the first turbocharger turbine inlet is in fluid communication with the first combustion cylinder exhaust valve; further wherein the second turbocharger turbine inlet is in fluid communication with the second combustion cylinder exhaust valve; further wherein the third turbocharger turbine inlet is in fluid communication with the third combustion cylinder exhaust valve; and further wherein a distance between each combustion cylinder exhaust valve and the associated turbocharger turbine inlet is less than 10 inches.