Abstract: A system according to the principles of the present disclosure includes a stop-start module and a fuel control module. The stop-start module stops an engine and thereby interrupts an engine cycle when a driver depresses a brake pedal while an ignition system is on and the engine is idling. The stop-start module restarts the engine when the driver releases the brake pedal. The fuel control module, when the engine is restarted, selectively injects fuel into a cylinder of the engine as the cylinder completes the interrupted engine cycle based on an amount of crankshaft rotation corresponding to a difference between a position of a piston in the cylinder when the piston is stopped and top dead center.

Abstract: A system includes a mode module and an energy module. The mode module generates a mode signal based on a temperature of an engine and at least one of a deceleration signal and a regenerative braking signal. The energy module, based on the mode signal, increases cooling of a coolant of the engine during at least one of a deceleration event of a vehicle and a regenerative braking event. The energy module, while increasing the cooling of the coolant, supplies an overvoltage to a cooling pump of the engine.

Abstract: An auto ignition mitigation system comprises a piston position module that determines a position of a piston within a cylinder and a temperature module that determines a first temperature of air within the cylinder. A fuel enrichment module communicates with the piston position module and the temperature module and determines a first fuel quantity based on the first temperature and the position of the piston. A fuel control module communicates with the fuel enrichment module and provides the first fuel quantity to the cylinder after the engine is started and before a first exhaust stroke of the piston.

Abstract: A system includes a heat exchanger and a fluid flow control module. The heat exchanger includes a substrate, a catalyst applied to the substrate, and fluid passages. Exhaust gas from an engine flows through the heat exchanger and a working fluid in the fluid passages absorbs heat from the exhaust gas. The fluid flow control module controls fluid flow from the heat exchanger based on a temperature of the catalyst.

Abstract: A catalytic converter includes an inlet end, an outlet end and a catalyst body. The inlet end is configured to receive an exhaust gas from an engine. An outlet end is configured to output the exhaust gas. A catalyst body includes partitioning members disposed between the inlet end and the outlet end. The catalyst body includes exhaust channels and fluid channels. The exhaust channels are configured to guide the exhaust gas from the inlet end to the outlet end. The fluid channels are configured to receive a fluid from and return the fluid to a waste heat recovery circuit. Each of the exhaust channels and each of the fluid channels includes a respective ones of the partitioning members.

Abstract: A control system includes a heater control module and a particulate matter (PM) load module. The heater control module selectively activates an electric heater to initiate regeneration in a zone of a particulate filter and deactivates the electric heater after the regeneration is initiated. The regeneration continues along a length of the particulate filter after the electric heater is deactivated. The PM load module determines a PM load based on an outlet temperature of the particulate filter after the regeneration is initiated.

Abstract: A system for a vehicle includes a conversion efficiency module, a threshold determination module, and a catalyst fault indication module. The conversion efficiency module generates an ozone conversion efficiency of a catalyst that converts ozone into oxygen based on a first amount of ozone in air measured upstream of the catalyst and a second amount of ozone in air measured downstream of the catalyst. The threshold determination module generates an efficiency threshold based on ambient humidity. The catalyst fault indication module selectively indicates that a fault is present in the catalyst when the ozone conversion efficiency is less than the efficiency threshold.

Abstract: A regeneration system for a filter that filters exhaust gas of an engine includes a soot loading determination module that determines soot accumulation in the filter. A regeneration control module receives the determined soot accumulation from the soot loading determination module, compares the soot accumulation to a first soot accumulation threshold, and selectively increases oxidation levels in the exhaust gas in response to the comparison between the soot accumulation and the first soot accumulation threshold to initiate regeneration in the filter.

Abstract: A system includes a mode module and an energy module. The mode module generates a mode signal based on a temperature of an engine and at least one of a deceleration signal and a regenerative braking signal. The energy module, based on the mode signal, increases cooling of a coolant of the engine during at least one of a deceleration event of a vehicle and a regenerative braking event. The energy module, while increasing the cooling of the coolant, supplies an overvoltage to a cooling pump of the engine.

Abstract: A system according to the principles of the present disclosure includes a stop-start module and a fuel control module. The stop-start module stops an engine and thereby interrupts an engine cycle when a driver depresses a brake pedal while an ignition system is on and the engine is idling. The stop-start module restarts the engine when the driver releases the brake pedal. The fuel control module, when the engine is restarted, selectively injects fuel into a cylinder of the engine as the cylinder completes the interrupted engine cycle based on an amount of crankshaft rotation corresponding to a difference between a position of a piston in the cylinder when the piston is stopped and top dead center.

Abstract: A catalytic converter includes an inlet end, an outlet end and a catalyst body. The inlet end is configured to receive an exhaust gas from an engine. An outlet end is configured to output the exhaust gas. A catalyst body includes partitioning members disposed between the inlet end and the outlet end. The catalyst body includes exhaust channels and fluid channels. The exhaust channels are configured to guide the exhaust gas from the inlet end to the outlet end. The fluid channels are configured to receive a fluid from and return the fluid to a waste heat recovery circuit. Each of the exhaust channels and each of the fluid channels includes a respective ones of the partitioning members.

Abstract: A system includes a heat exchanger and a fluid flow control module. The heat exchanger includes a substrate, a catalyst applied to the substrate, and fluid passages. Exhaust gas from an engine flows through the heat exchanger and a working fluid in the fluid passages absorbs heat from the exhaust gas. The fluid flow control module controls fluid flow from the heat exchanger based on a temperature of the catalyst.

Abstract: A system for a vehicle includes a conversion efficiency module, a threshold determination module, and a catalyst fault indication module. The conversion efficiency module generates an ozone conversion efficiency of a catalyst that converts ozone into oxygen based on a first amount of ozone in air measured upstream of the catalyst and a second amount of ozone in air measured downstream of the catalyst. The threshold determination module generates an efficiency threshold based on ambient humidity. The catalyst fault indication module selectively indicates that a fault is present in the catalyst when the ozone conversion efficiency is less than the efficiency threshold.

Abstract: An auto ignition mitigation system comprises a piston position module that determines a position of a piston within a cylinder and a temperature module that determines a first temperature of air within the cylinder. A fuel enrichment module communicates with the piston position module and the temperature module and determines a first fuel quantity based on the first temperature and the position of the piston. A fuel control module communicates with the fuel enrichment module and provides the first fuel quantity to the cylinder after the engine is started and before a first exhaust stroke of the piston.

Abstract: A control system comprises a combustion control module and a regeneration control module. The combustion control module controls operation of a vehicle in a first mode during which a combustion engine is off and in a second mode during which the combustion engine is on. The regeneration control module is in communication with the combustion control module and activates an electric heater during the first mode to heat an inlet of a particulate matter (PM) filter. Exhaust gas produced by the combustion engine enters the inlet and initiates a regeneration cycle of the PM filter in the second mode.

Abstract: A regeneration system for a filter that filters exhaust gas of an engine includes a soot loading determination module that determines soot accumulation in the filter. A regeneration control module receives the determined soot accumulation from the soot loading determination module, compares the soot accumulation to a first soot accumulation threshold, and selectively increases oxidation levels in the exhaust gas in response to the comparison between the soot accumulation and the first soot accumulation threshold to initiate regeneration in the filter.

Abstract: An engine control system comprises an actuator control module and a tertiary injection module. The actuator control module provides secondary air to an exhaust system when a catalyst light-off mode is enabled and provides first and second injections of fuel to a cylinder during each engine cycle while the catalyst light-off mode is enabled. The tertiary injection module selectively provides a third injection of fuel to the cylinder during an exhaust phase of each engine cycle while the catalyst light-off mode is enabled. The first, second, and third injections are each separated by a period of time.

Abstract: An intake valve control system comprises a torque control module and an opening control module. The torque control module controls torque output by an engine based on a torque output target. The opening control module opens intake valves of M cylinders of the engine to a first lift position when the torque output target is less than a torque threshold and selectively transitions the intake valves of N of the M cylinders to a second lift position. N and M are integers greater than zero, and N is less than M. The second lift position is open further than the first lift position.

Abstract: An intake valve control system comprises a torque control module and an opening control module. The torque control module controls torque output by an engine based on a torque output target. The opening control module opens intake valves of M cylinders of the engine to a first lift position when the torque output target is less than a torque threshold and selectively transitions the intake valves of N of the M cylinders to a second lift position. N and M are integers greater than zero, and N is less than M. The second lift position is open further than the first lift position.

Abstract: A control system comprises a combustion control module and a regeneration control module. The combustion control module controls operation of a vehicle in a first mode during which a combustion engine is off and in a second mode during which the combustion engine is on. The regeneration control module is in communication with the combustion control module and activates an electric heater during the first mode to heat an inlet of a particulate matter (PM) filter. Exhaust gas produced by the combustion engine enters the inlet and initiates a regeneration cycle of the PM filter in the second mode.