Methods of operation of liquid and gaseous multi-fuel compression ignition engines that may be operated on a gaseous fuel or a liquid fuel, or a combination of both a gaseous fuel and a liquid fuel at the same time and in some embodiments, in the same combustion event. Various embodiments are disclosed.

Methods of operation of liquid and gaseous multi-fuel compression ignition engines that may be operated on a gaseous fuel or a liquid fuel, or a combination of both a gaseous fuel and a liquid fuel at the same time and in some embodiments, in the same combustion event. Various embodiments are disclosed.

Methods of operation of liquid and gaseous multi-fuel compression ignition engines that may be operated on a gaseous fuel or a liquid fuel, or a combination of both a gaseous fuel and a liquid fuel at the same time and in some embodiments, in the same combustion event. Various embodiments are disclosed.

Methods of operation of liquid and gaseous multi-fuel compression ignition engines that may be operated on a gaseous fuel or a liquid fuel, or a combination of both a gaseous fuel and a liquid fuel at the same time and in some embodiments, in the same combustion event. Various embodiments are disclosed.

A method of controlling a high pressure gas injection internal combustion engine includes injecting, in a first combustion mode, by a first as injection system, a first gaseous fuel into a cylinder of the engine, and accumulating in a container of a second gas injection system excess gaseous fuel from the first fuel system, shifting, in the cylinder, from the first combustion mode to a second combustion mode including determining a value of an air flow related parameter indicative of an air mass flow into the cylinder, determining, based on the determined air flow related parameter value, a value of a fuel flow related parameter indicative of a mass flow of the excess gaseous fuel, and supplying from the container, in accordance with the determined fuel flow related parameter value, the excess gaseous fuel to provide a premix of air and the excess gaseous fuel to the cylinder.

A method of controlling a high pressure gas injection internal combustion engine includes injecting, in a first combustion mode, by a first as injection system, a first gaseous fuel into a cylinder of the engine, and accumulating in a container of a second gas injection system excess gaseous fuel from the first fuel system, shifting, in the cylinder, from the first combustion mode to a second combustion mode including determining a value of an air flow related parameter indicative of an air mass flow into the cylinder, determining, based on the determined air flow related parameter value, a value of a fuel flow related parameter indicative of a mass flow of the excess gaseous fuel, and supplying from the container, in accordance with the determined fuel flow related parameter value, the excess gaseous fuel to provide a premix of air and the excess gaseous fuel to the cylinder.

The present disclosure provides a method comprising adjusting at least one of an air-to-fuel ratio and an ignition spark characteristic of a first cylinder of an engine to produce an exhaust gas comprising a predetermined quantity of hydrogen; and providing the exhaust gas from the first cylinder to a second cylinder of the engine, wherein the exhaust gas comprising the hydrogen ignites a first fuel type in response to a compression event.

The present disclosure provides a method comprising adjusting at least one of an air-to-fuel ratio and an ignition spark characteristic of a first cylinder of an engine to produce an exhaust gas comprising a predetermined quantity of hydrogen; and providing the exhaust gas from the first cylinder to a second cylinder of the engine, wherein the exhaust gas comprising the hydrogen ignites a first fuel type in response to a compression event.

A safety brake system for a trailer comprises a brake unit to brake the trailer. An actuation unit comprises a mount secured to a front end of the trailer. A brake interface is operatively supported by the mount for displacement with respect to the trailer. The brake interface is displaceable toward a deactivation state in which the brake interface releases the brake unit from braking the trailer. A probe is operatively supported by the mount for displacement with respect to the trailer, the probe being displaceable between a hitching state in which the probe is adapted to contact the hitch of a vehicle, and a blocking state in which the probe blocks a hitch coupler of the trailer to prevent hitching of the trailer to a vehicle A biasing unit biases the probe against the hitch of the trailer in the hitching state and toward the blocking state. A mechanism operatively connects the brake interface to the probe, the mechanism retaining the brake interface in the deactivated state when the probe is in the hitching state, the mechanism releasing the brake interface from the deactivated state when the probe moves to the blocking state. A method for deactivating a safety brake is also provided.

A safety brake system for a trailer comprises a brake unit to brake the trailer. An actuation unit comprises a mount secured to a front end of the trailer. A brake interface is operatively supported by the mount for displacement with respect to the trailer. The brake interface is displaceable toward a deactivation state in which the brake interface releases the brake unit from braking the trailer. A probe is operatively supported by the mount for displacement with respect to the trailer, the probe being displaceable between a hitching state in which the probe is adapted to contact the hitch of a vehicle, and a blocking state in which the probe blocks a hitch coupler of the trailer to prevent hitching of the trailer to a vehicle A biasing unit biases the probe against the hitch of the trailer in the hitching state and toward the blocking state. A mechanism operatively connects the brake interface to the probe, the mechanism retaining the brake interface in the deactivated state when the probe is in the hitching state, the mechanism releasing the brake interface from the deactivated state when the probe moves to the blocking state. A method for deactivating a safety brake is also provided.