A bi-fuel vehicle has an Internal Combustion Engine (ICE) to provide motive power to the vehicle by combustion of a liquid fuel and gas-phase fuel. The vehicle has a dual fuel tank including a liquid fuel tank to receive liquid fuel, contain the liquid fuel, and supply the liquid fuel for combustion in the ICE. The vehicle has a pressurizable gas-phase fuel tank defined by a wall. A gas-phase fuel is permeable through the wall. The pressurizable gas-phase fuel tank is to receive the gas-phase fuel, contain the gas-phase fuel, and supply the gas-phase fuel for combustion in the ICE. A shell envelops the pressurizable gas-phase fuel tank and defines an interior space of the liquid fuel tank. The wall is in fluid communication with the interior space. The interior space is to receive the permeated gas-phase fuel.

A bi-fuel vehicle has an Internal Combustion Engine (ICE) to provide motive power to the vehicle by combustion of a liquid fuel and gas-phase fuel. The vehicle has a dual fuel tank including a liquid fuel tank to receive liquid fuel, contain the liquid fuel, and supply the liquid fuel for combustion in the ICE. The vehicle has a pressurizable gas-phase fuel tank defined by a wall. A gas-phase fuel is permeable through the wall. The pressurizable gas-phase fuel tank is to receive the gas-phase fuel, contain the gas-phase fuel, and supply the gas-phase fuel for combustion in the ICE. A shell envelops the pressurizable gas-phase fuel tank and defines an interior space of the liquid fuel tank. The wall is in fluid communication with the interior space. The interior space is to receive the permeated gas-phase fuel.

A control apparatus that is applied to a gasoline engine including cylinders is provided, which includes a controller for controlling the engine to perform a compression self-ignition operation within a first operating range, and perform a forced-ignition operation within a second operating range. Within a third operating range where an engine load is above the first range and below the second range, the controller executes a combined operation control in which a first cylinder performs the compression self-ignition operation and a second cylinder performs the forced-ignition operation, and the controller causes a change rate of a torque from the first cylinder to be lower than that of a torque from the second cylinder, the rates being taken in relation to a change of a requested load of the engine, the first cylinder being one or some of the cylinders, the second cylinder being the rest of the cylinders.

A control apparatus that is applied to a gasoline engine including cylinders is provided, which includes a controller for controlling the engine to perform a compression self-ignition operation within a first operating range, and perform a forced-ignition operation within a second operating range. Within a third operating range where an engine load is above the first range and below the second range, the controller executes a combined operation control in which a first cylinder performs the compression self-ignition operation and a second cylinder performs the forced-ignition operation, and the controller causes a change rate of a torque from the first cylinder to be lower than that of a torque from the second cylinder, the rates being taken in relation to a change of a requested load of the engine, the first cylinder being one or some of the cylinders, the second cylinder being the rest of the cylinders.

A control apparatus that is applied to a gasoline engine including cylinders is provided. The apparatus includes a controller for controlling the engine to perform a compression self-ignition operation within a first operating range, and perform a forced-ignition operation within a second operating range. Within a third operating range where the engine load is above the first range and below the second range, the controller executes a combined operation control in which a first cylinder performs the compression self-ignition operation and a second cylinder performs the forced-ignition operation, and the controller causes the first cylinder to generate a torque that is the same or lower than a torque before the control, and causes the second cylinder to generate a torque that is higher than a torque before the control, the first cylinder being one or some of the cylinders, the second cylinder being the rest of the cylinders.

A control apparatus that is applied to a gasoline engine including cylinders is provided. The apparatus includes a controller for controlling the engine to perform a compression self-ignition operation within a first operating range, and perform a forced-ignition operation within a second operating range. Within a third operating range where the engine load is above the first range and below the second range, the controller executes a combined operation control in which a first cylinder performs the compression self-ignition operation and a second cylinder performs the forced-ignition operation, and the controller causes the first cylinder to generate a torque that is the same or lower than a torque before the control, and causes the second cylinder to generate a torque that is higher than a torque before the control, the first cylinder being one or some of the cylinders, the second cylinder being the rest of the cylinders.