Patent ID: 7805927
Filing Date: 2010-10-05
Classification: F01N,F02B,F02D,Y02T

Abstract:
1. An exhaust temperature control system for a displacement on demand (DOD) diesel engine, comprising: a first and a second cylinder; an air intake including respective valves disposed upstream of said first and second cylinders and that are each moveable between a closed position and an open position to selectively enable air flow into said first and second cylinders, respectively; a fuel injector that selectively enables fuel flow into one of said first and second cylinders; a temperature sensor that is responsive to an exhaust temperature and generates a temperature signal based thereon; and a controller that determines an engine load and increases an exhaust temperature of said diesel engine by increasing fuel flow to continue to activate said second cylinder as well as closing said air intake and disabling fuel flow through said fuel injector to deactivate said first cylinder based on said temperature signal when said engine load is below a predetermined engine load.