Abstract: An inexpensive piezoelectric sensor where noise unlikely occurs and a method for manufacturing the same are provided. A piezoelectric body (2) made of polymeric material, a first electrode-supporting portion (3) disposed at one side of the piezoelectric body (2) and supporting a signal electrode (3b) on a first insulator (3a), and a second electrode-supporting portion (4) disposed at the other side of the piezoelectric body (2) and supporting a ground electrode (4b) on a second insulator (4a) are included, and the first electrode-supporting portion (3) and the second electrode-supporting portion (4) are arranged so that the signal electrode (3b) and the ground electrode (4b) overlap each other in a layering direction.

Abstract: An inexpensive piezoelectric sensor where noise unlikely occurs and a method for manufacturing the same are provided. A piezoelectric body (2) made of polymeric material, a first electrode-supporting portion (3) disposed at one side of the piezoelectric body (2) and supporting a signal electrode (3b) on a first insulator (3a), and a second electrode-supporting portion (4) disposed at the other side of the piezoelectric body (2) and supporting a ground electrode (4b) on a second insulator (4a) are included, and the first electrode-supporting portion (3) and the second electrode-supporting portion (4) are arranged so that the signal electrode (3b) and the ground electrode (4b) overlap each other in a layering direction.

Abstract: A method of starting the engine of a vehicle, such as an automobile, over a wide range of ambient temperatures, such as in cold temperatures below 32.degree. F. and warm temperatures above 32.degree. F. The method includes the steps of energizing the starter motor of the vehicle from the vehicle battery only and starting the vehicle at warm temperatures, and providing an auxiliary battery connected in combination with the vehicle battery for starting the vehicle at cold temperatures. The invention comprehends maintaining the auxiliary battery warm separate from the vehicle during low ambient temperature conditions when the vehicle is not in use. Alternatively, the invention comprehends utilizing a small, low capacity battery which may be incapable of starting the vehicle when the battery is at the cold temperature, but which may itself start the vehicle when the battery is at warm temperatures.