Patent ID: 8620565
Filing Date: 2013-12-31
Classification: F02B,F02D,F02M,Y02T

Abstract:
1. A compression ignition engine comprising: engine cylinders within which combustion occurs to operate the engine; an intake system for introducing charge air into the engine cylinders; a fueling system for introducing fuel into the engine cylinders to combust with the charge air; an exhaust system through which exhaust gas resulting from combustion of fuel in the engine cylinders exits; a lubrication system for delivering lubrication under pressure to certain engine components; a control system for comparing engine speed data representing engine speed to an engine speed threshold above which the engine is considered to be running, for comparing engine temperature data representing temperature of the engine to an engine temperature threshold, for starting a first timer once engine speed data has become greater than the engine speed threshold, for starting a second timer once engine speed data has become greater than the engine speed threshold and engine oil pressure data representing pressure of lubrication in the lubrication system has become greater than an engine oil pressure threshold, and for causing engine torque to be limited to an engine torque limit until the first to occur of: engine temperature data exceeding the engine temperature threshold, the first timer having timed to a time that is a function of engine temperature, and the second timer having timed to a time that is a function of engine temperature, wherein the control system comprises a latch function that is selectively operable to a set state and a reset state and that is operated from the reset state to the set state when engine speed data becomes greater than the engine speed threshold, and the first timer commences timing when the latch function is operated from the reset state to the set state.