Patent ID: 9234490
Filing Date: 2016-01-12
CPC Classification: F01N,F02P

Claim Text:
1. An internal combustion engine system, comprising: a cylinder head connected at a mounting face with a cylinder block; four cylinders arranged in line along a longitudinal axis of the cylinder head, wherein each cylinder has at least one exhaust port to discharge exhaust gases via an exhaust gas discharge system, for which an exhaust gas pipe is connected at each exhaust port; wherein the exhaust gas pipes of the cylinders merge in stages into a common exhaust gas pipe; wherein the exhaust gas discharge system emerges outside of the cylinder head; and a control system with instructions to initiate external ignition of the cylinders in the sequence 1-3-4-2, wherein the cylinders starting with an outermost cylinder are counted and numbered along the longitudinal axis of the cylinder head, wherein the exhaust pipes of the cylinders comprise two innermost exhaust pipes that merge at a first junction to form a part exhaust pipe that merges with two outermost exhaust pipes at a collection point, wherein: