Gas fuel supply mechanism for gas combustion engine

A fuel supply mechanism for a gas combustion engine, comprising:

• a gas combustion engine;
• a tank filled with a gas fuel;
• a fuel injector having a fuel injection valve mounted on said gas combustion engine;
• a pipe for supplying the gas fuel from said tank to said fuel injector;
• gas fuel cutoff means in said pipe for cutting off the gas fuel flowing through said pipe;
• gas fuel state detecting means for detecting a state of the gas fuel;
• control means responsive to a detected signal from said gas fuel state detecting means for controlling said gas fuel cutoff means and said fuel injection valve;
• and
• wherein said gas combustion engine and said fuel supply mechanism are adapted to be installed on a motor vehicle, and further comprising a shock sensor for detecting a shock applied to the motor vehicle, said control means further comprising means responsive to detected signals from said shock sensor and said gas fuel state detecting means for controlling said gas fuel cutoff means and said fuel injection valve.

A fuel supply mechanism for a gas combustion engine, comprising:

• a gas combustion engine;
• a tank filled with a gas fuel;
• a fuel injector having a fuel injection valve mounted on said gas combustion engine;
• a pipe for supplying the gas fuel from said tank to said fuel injector;
• gas fuel cutoff means in said pipe for cutting off the gas fuel flowing through said pipe;
• gas fuel state detecting means for detecting a state of the gas fuel;
• control means responsive to a detected signal from said gas fuel state detecting means for controlling said gas fuel cutoff means and said fuel injection valve;
• wherein the gas combustion engine is a water-cooled engine and further comprising regulator means having a water passage for regulating a pressure of a gas fuel supplied to said water-cooled engine;
• a heat exchanger;
• and cooling water passage means for connecting said water-cooled engine to said heat exchanger to supply cooling water to both said water-cooled engine and said heat exchanger, said cooling water passage means having branch passages which connect said regulator means and said water-cooled engine parallel to said heat exchanger;
• and
• further comprising a motor vehicle having a cabin, wherein said regulator means comprises a primary pressure regulator and a secondary pressure regulator, said water-cooled engine being mounted in a front portion of the motor vehicle, said heat exchanger being disposed in the cabin of the motor vehicle for introducing cooling water which has been heated in a water jacket of the water-cooled engine through said cooling water passage means to heat the cabin with the heat of the introduced cooling water, at least said primary pressure regulator being disposed between said water-cooled engine and said heat exchanger, said primary pressure regulator and said water-cooled engine being connected parallel to said heat exchanger.

A fuel supply mechanism for a gas combustion engine, comprising:

• a gas combustion engine;
• a tank filled with a gas fuel;
• a fuel injector having a fuel injection valve mounted on said gas combustion engine;
• a pipe for supplying the gas fuel from said tank to said fuel injector;
• gas fuel cutoff means in said pipe for cutting off the gas fuel flowing through said pipe;
• gas fuel state detecting means for detecting a state of the gas fuel;
• control means responsive to a detected signal from said gas fuel state detecting means for controlling said gas fuel cutoff means and said fuel injection valve;
• and
• wherein said gas fuel state detecting means is disposed in said pipe for detecting a state of the gas fuel flowing through said pipe;
• and further comprising remaining fuel indicating means for determining and indicating a remaining amount of a gas fuel in said tank, said remaining fuel indicating means comprising means for determining a weight of an ideal gas according to formulas of the ideal gas based on a state of the gas fuel near the tank which is detected by said gas fuel state detecting means, and converting the determined weight of the ideal gas into a weight of an actual gas to indicate the remaining amount of the gas fuel.

A fuel supply mechanism for a gas combustion engine, comprising:

• a gas combustion engine;
• a tank filled with a gas fuel;
• a fuel injector having a fuel injection valve mounted on said gas combustion engine;
• a pipe for supplying the gas fuel from said tank to said fuel injector;
• gas fuel state detecting means disposed in said pipe for detecting a state of the gas fuel flowing through said pipe;
• and
• remaining fuel indicating means for determining and indicating a remaining amount of a gas fuel in said tank, said remaining fuel indicating means comprising means for determining a weight of an ideal gas according to formulas of the ideal gas based on a state of the gas fuel near the tank which is detected by said gas fuel state detecting means, and converting the determined weight of the ideal gas into a weight of an actual gas to indicate the remaining amount of the gas fuel.

A fuel supply mechanism for a gas combustion engine, comprising:

• a gas combustion engine;
• a tank filled with a gas fuel;
• a fuel injector having a fuel injection valve mounted on said gas combustion engine;
• a pipe for supplying the gas fuel from said tank to said fuel injector;
• gas fuel state detecting means for detecting a state of gas fuel near said fuel injection valve;
• fuel injection control means for determining a corrective coefficient based on a detected signal from said gas fuel state detecting means, and correcting a period of time in which the gas fuel is to be injected from said fuel injection valve, based on said corrective coefficient;
• and
• wherein said gas fuel state detecting means disposed in said pipe for detecting a state of the gas fuel flowing through said pipe;
• and further comprising remaining fuel indicating means for determining and indicating a remaining amount of a gas fuel in said tank, said remaining fuel indicating means comprising means for determining a weight of an ideal gas according to formulas of the ideal gas based on a state of the gas fuel near the tank which is detected by said gas fuel state detecting means, and converting the determined weight of the ideal gas into a weight of an actual gas to indicate the remaining amount of the gas fuel.