Nissan Motor Company Limited

The Furukawa Electric Co., Ltd.

Furukawa Automotive Systems Inc.

Yoshiyuki Ishida

Sadao Matsushima

Seikoh Satoh

Yasushi Aoyagi

Toshihide Fukuchi

Kiyoshi Sagara

Hiroyasu Yano

Atsuyuki Naka

Nobuyoshi Fukuda

Yosio Taguchi

Sadao Matushima

Junji Osako

The objective of the present invention is to use a simple circuit configuration and simple signal processing to provide a pulse radar device with which it is possible to reduce the impact of local signal carrier leakage on a received signal, and which makes it possible to perform high precision angle measurement using a multi-beam system. In order to measure the angle of an object, a pulse radar device is provided with at least two receiving antennas, and a reception circuit is provided with a signal selection switch for selectively switching between received signals received by the receiving antennas. The received signal contains a local signal leakage component, and a DC level of the received signal varies with the switching of the signal selection switch. In order to eliminate the impact of such DC level variations, a high-pass filter is disposed between a mixer and a frequency analyzer.

Pulse radar device

A radar device that transmits a high frequency signal and detects an object by a reflected wave that is reflected by the object includes a transmitting antenna that transmits the high frequency signal, a receiving antenna that receives a reflected wave that is transmitted by the transmitting antenna and reflected by the object, and a dummy antenna that attenuates a reflected wave that is reflected by a structure arranged on a transmission path of the high frequency signal. The dummy antenna is configured be selectable as an antenna having another function.

Radar device

A high-frequency circuit board capable of easily forming a bias line whose resonance frequency is sufficiently separated from operating frequency is provided. On a high-frequency circuit board, by electrically connecting a bias lineto a high-frequency circuitusing blind via holesand, it is possible to limit the route that has a possibility of producing resonance only to the bias line connecting the endsandof the blind via holesandto the bias line. By adjusting the route length from the endto the end, it is possible to prevent production of resonance in the vicinity of the operating frequency.

High-frequency circuit board

A mounting arrangement for an automotive vehicle includes a transverse engine having a crankshaft with an axis of rotation extending transversely to a longitudinal axis of the vehicle, a gear train of a transmission having an axis which extends in parallel with the axis of the engine crankshaft, and a differential gear unit having an axis which extends in parallel to the axes of the engine crankshaft and the transmission gear train. The axis of the engine crankshaft is located rearward of the axis of the transmission gear train and over the axis of the differential gear unit, and the axis of the differential gear unit is located rearward of the axis of the transmission gear train. Further, the engine to lower the engine hood line inclined forward.

Vehicular engine and power train mounting arrangement

In an internal combustion engine comprising a cylinder block having at least one row of cylinders and at least one cylinder head, there are provided a coolant distributor passage for supplying a coolant from a pump to the water jacket of the cylinder block, first and second communication holes for allowing the coolant to flow from the cylinder block water jacket to the cylinder head water jacket, and a coolant collector passage for returning the coolant from the cylinder head water jacket to the pump. The coolant distributor passage and collector passages both extend along the cylinder row, one on one side of the cylinder row and the other on the opposite side. The distributor passage is formed in an upper portion of the cylinder block near the cylinder head. The collector passage is formed in the cylinder head. One longitudinal end of the collector passage is connected to the pump. The first communication holes are formed on the distributor passage's side and the second communication holes on the collector passage's side. The first and second communication holes are so sized that the total opening area of the first communication holes are larger than that of the second holes.

Coolant passage system of internal combustion engine

A fuel pressure regulator for use in a fuel injection system of a gasoline fueled engine, comprises a fuel distributor pipe having an inlet and a plurality of outlets connected to fuel injections, a casing secured to a portion of the fuel distributor pipe, a diaphragm member secured between the portion of the distributor pipe and the casing, and a fuel discharge nozzle disposed interiorly of the distributor pipe to discharge the fuel out of the distributor pipe, so that the possibility of fuel leakage in the piping of the fuel injection system is effectively decreased, rendering easier assembly of the fuel injection system and lowering the production cost of the same.

Fuel pressure regulator of fuel injection system

The casing of a fuel pump section having a motor-driven fuel pump is integrally formed with a damper which is provided with a damping chamber for damping fuel pressure pulsation. The damping chamber is communicable with the interior of the casing of the fuel pump section through apertures formed through the outer wall of the casing so that the damping chamber is supplied with fuel pressurized by the fuel pump. A resilient umbrella type check valve member is securely disposed to cover the apertures of the outer wall of the casing of the fuel pump section so that the fuel flows only in a direction from the interior of the casing to the damping chamber.///

Growing community of inventors

Tokyo, Japan

Yoshiyuki Ishida